202 relations: Abomasum, Acetic acid, Acetylcholine, Acid, Acta Biomaterialia, Active transport, Agrobacterium, Agrobacterium tumefaciens, Alkali, Alpha-amylase, Amino acid, Amylase, Anal canal, Animal, Anus, Assimilation (biology), ATP-binding cassette transporter, Bacteria, Bacterial conjugation, Beak, Bicarbonate, Bile, Bile acid, Biotin, Bird, Bird hybrid, Blood plasma, Blood vessel, Bolus (digestion), Butyric acid, Canine tooth, Carbohydrate, Carnivore, Catabolism, Cecum, Cell membrane, Cellular compartment, Cellulose, Cephalic phase, Cerebral cortex, Chewing, Cholecystokinin, Chyme, Chymotrypsin, Circulatory system, Columbidae, Coprophagia, Crop (anatomy), Crop milk, Cubilin, ..., Defecation, Delta cell, Denaturation (biochemistry), Deoxyribonuclease, Diazotroph, Diffusion, Digestive enzyme, Digestive system of gastropods, Digestive system of humpback whales, Diglyceride, Dipeptidase, Disaccharide, Discovery and development of proton pump inhibitors, Duodenum, Earthworm, Ecological niche, Endosymbiont, Entamoeba histolytica, Enteropeptidase, Enzyme, Epithelium, Erepsin, Esophagus, Exopeptidase, Fatty acid, Feces, Fermentation, Food, Fructose, Functional group, Fungus, G cell, Galactose, Gallbladder, Gastric acid, Gastric distension, Gastric glands, Gastric inhibitory polypeptide, Gastrin, Gastroesophageal reflux disease, Gastrointestinal tract, Gastrovascular cavity, Gizzard, Glucose, Glycerol, Gut flora, Haptocorrin, Hemicellulose, Herbivore, Histamine, Human digestive system, Human mouth, Hydrochloric acid, Hydrogen, Hypothalamus, Ingestion, Innate immune system, Intestinal gland, Intestinal villus, Intrinsic factor, Kingdom (biology), Lactase, Lactose, Large intestine, Lingual lipase, Liver, Lysosome, Macaw, Maltose, Mammal, Medulla oblongata, Membrane fusion protein, Microvillus, Migrating motor complex, Molecular diffusion, Monosaccharide, Motilin, Mouth, Mucous membrane, Mucus, Nuclease, Nucleotide, Nutrition, Omasum, Opine, Oral mucosa, Organism, Osmosis, Pancreas, Pancreatic duct, Pancreatic juice, Pancreatic lipase family, Parietal cell, Pathogen, Pepsin, Peptide, Peristalsis, PH, Phagocytosis, Phagolysosome, Phagosome, Pharynx, Polysaccharide, Propionic acid, Protein, Proteolysis, Protozoa, Pylorus, Rabbit, Rectum, Red blood cell, Regurgitation (digestion), Reticulum (anatomy), Rhizobia, Rhizobium rhizogenes, Ribonuclease, Rodent, Rumen, Ruminant, Saliva, Salivary gland, Secretin, Secretion, Shark anatomy, Short-chain fatty acid, Small intestine, Somatostatin, Spider, Squid, Starch, Stomach, Sublingual administration, Sucrase, Sucrose, Surface area, Swallowing, Sympathetic nervous system, Tongue, Triglyceride, Trypsin, Trypsinogen, Type three secretion system, Vacuole, Vagus nerve, Venus flytrap, Vertebrate, Vesicle (biology and chemistry), Virulence, Virulence-related outer membrane protein family, Vitamin B12, Vitamin K, Zymogen. Expand index (152 more) »
Abomasum
The abomasum, also known as the maw, rennet-bag, or reed tripe, is the fourth and final stomach compartment in ruminants.
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Acetic acid
Acetic acid, systematically named ethanoic acid, is a colourless liquid organic compound with the chemical formula CH3COOH (also written as CH3CO2H or C2H4O2).
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Acetylcholine
Acetylcholine (ACh) is an organic chemical that functions in the brain and body of many types of animals, including humans, as a neurotransmitter—a chemical message released by nerve cells to send signals to other cells.
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Acid
An acid is a molecule or ion capable of donating a hydron (proton or hydrogen ion H+), or, alternatively, capable of forming a covalent bond with an electron pair (a Lewis acid).
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Acta Biomaterialia
Acta Biomaterialia is a monthly peer-reviewed scientific journal published by Elsevier.
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Active transport
Active transport is the movement of molecules across a membrane from a region of their lower concentration to a region of their higher concentration—in the direction against the concentration gradient.
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Agrobacterium
Agrobacterium is a genus of Gram-negative bacteria established by H. J. Conn that uses horizontal gene transfer to cause tumors in plants.
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Agrobacterium tumefaciens
Agrobacterium tumefaciens (updated scientific name Rhizobium radiobacter, synonym Agrobacterium radiobacter) is the causal agent of crown gall disease (the formation of tumours) in over 140 species of eudicots.
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Alkali
In chemistry, an alkali (from Arabic: al-qaly “ashes of the saltwort”) is a basic, ionic salt of an alkali metal or alkaline earth metal chemical element.
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Alpha-amylase
α-Amylase is a protein enzyme that hydrolyses alpha bonds of large, alpha-linked polysaccharides, such as starch and glycogen, yielding glucose and maltose.
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Amino acid
Amino acids are organic compounds containing amine (-NH2) and carboxyl (-COOH) functional groups, along with a side chain (R group) specific to each amino acid.
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Amylase
An amylase is an enzyme that catalyses the hydrolysis of starch into sugars.
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Anal canal
The anal canal is the terminal part of the large intestine.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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Anus
The anus (from Latin anus meaning "ring", "circle") is an opening at the opposite end of an animal's digestive tract from the mouth.
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Assimilation (biology)
Biological assimilation, or bio-assimilation, is the combination of two processes to supply cells with nutrients.
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ATP-binding cassette transporter
ATP-binding cassette transporters (ABC transporters) are members of a transport system superfamily that is one of the largest and is possibly one of the oldest families with representatives in all extant phyla from prokaryotes to humans.
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Bacteria
Bacteria (common noun bacteria, singular bacterium) is a type of biological cell.
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Bacterial conjugation
Bacterial conjugation is the transfer of genetic material between bacterial cells by direct cell-to-cell contact or by a bridge-like connection between two cells.
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Beak
The beak, bill, or rostrum is an external anatomical structure of birds that is used for eating and for preening, manipulating objects, killing prey, fighting, probing for food, courtship and feeding young.
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Bicarbonate
In inorganic chemistry, bicarbonate (IUPAC-recommended nomenclature: hydrogencarbonate) is an intermediate form in the deprotonation of carbonic acid.
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Bile
Bile or gall is a dark green to yellowish brown fluid, produced by the liver of most vertebrates, that aids the digestion of lipids in the small intestine.
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Bile acid
Bile acids are steroid acids found predominantly in the bile of mammals and other vertebrates.
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Biotin
Biotin is a water-soluble B vitamin, also called vitamin B7 and formerly known as vitamin H or coenzyme R. Biotin is composed of a ureido ring fused with a tetrahydrothiophene ring.
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Bird
Birds, also known as Aves, are a group of endothermic vertebrates, characterised by feathers, toothless beaked jaws, the laying of hard-shelled eggs, a high metabolic rate, a four-chambered heart, and a strong yet lightweight skeleton.
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Bird hybrid
A bird hybrid is a bird that has two different species as parents.
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Blood plasma
Blood plasma is a yellowish coloured liquid component of blood that normally holds the blood cells in whole blood in suspension; this makes plasma the extracellular matrix of blood cells.
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Blood vessel
The blood vessels are the part of the circulatory system, and microcirculation, that transports blood throughout the human body.
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Bolus (digestion)
In digestion, a bolus (from Latin bolus, "ball") is a ball-like mixture of food and saliva that forms in the mouth during the process of chewing (which is largely an adaptation for plant-eating mammals).
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Butyric acid
Butyric acid (from βούτῡρον, meaning "butter"), also known under the systematic name butanoic acid, abbreviated BTA, is a carboxylic acid with the structural formula CH3CH2CH2-COOH.
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Canine tooth
In mammalian oral anatomy, the canine teeth, also called cuspids, dog teeth, fangs, or (in the case of those of the upper jaw) eye teeth, are relatively long, pointed teeth.
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Carbohydrate
A carbohydrate is a biomolecule consisting of carbon (C), hydrogen (H) and oxygen (O) atoms, usually with a hydrogen–oxygen atom ratio of 2:1 (as in water); in other words, with the empirical formula (where m may be different from n).
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Carnivore
A carnivore, meaning "meat eater" (Latin, caro, genitive carnis, meaning "meat" or "flesh" and vorare meaning "to devour"), is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of animal tissue, whether through predation or scavenging.
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Catabolism
Catabolism (from Greek κάτω kato, "downward" and βάλλειν ballein, "to throw") is the set of metabolic pathways that breaks down molecules into smaller units that are either oxidized to release energy or used in other anabolic reactions.
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Cecum
The cecum or caecum (plural ceca; from the Latin caecus meaning blind) is an intraperitoneal pouch that is considered to be the beginning of the large intestine.
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Cell membrane
The cell membrane (also known as the plasma membrane or cytoplasmic membrane, and historically referred to as the plasmalemma) is a biological membrane that separates the interior of all cells from the outside environment (the extracellular space).
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Cellular compartment
Cellular compartments in cell biology comprise all of the closed parts within the cytosol of a eukaryotic cell, usually surrounded by a single or double lipid layer membrane.
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Cellulose
Cellulose is an organic compound with the formula, a polysaccharide consisting of a linear chain of several hundred to many thousands of β(1→4) linked D-glucose units.
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Cephalic phase
The cephalic phase of gastric secretion occurs even before food enters the stomach, especially while it is being eaten.
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Cerebral cortex
The cerebral cortex is the largest region of the cerebrum in the mammalian brain and plays a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.
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Chewing
Chewing or mastication is the process by which food is crushed and ground by teeth.
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Cholecystokinin
Cholecystokinin (CCK or CCK-PZ; from Greek chole, "bile"; cysto, "sac"; kinin, "move"; hence, move the bile-sac (gallbladder)) is a peptide hormone of the gastrointestinal system responsible for stimulating the digestion of fat and protein.
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Chyme
Chyme or chymus (from Greek χυμός khymos, "juice") is the semi-fluid mass of partly digested food that is expelled by the stomach, through the pyloric valve, into the duodenum (the beginning of the small intestine).
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Chymotrypsin
Chymotrypsin (chymotrypsins A and B, alpha-chymar ophth, avazyme, chymar, chymotest, enzeon, quimar, quimotrase, alpha-chymar, alpha-chymotrypsin A, alpha-chymotrypsin) is a digestive enzyme component of pancreatic juice acting in the duodenum, where it performs proteolysis, the breakdown of proteins and polypeptides.
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Circulatory system
The circulatory system, also called the cardiovascular system or the vascular system, is an organ system that permits blood to circulate and transport nutrients (such as amino acids and electrolytes), oxygen, carbon dioxide, hormones, and blood cells to and from the cells in the body to provide nourishment and help in fighting diseases, stabilize temperature and pH, and maintain homeostasis.
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Columbidae
Pigeons and doves constitute the animal family Columbidae and the order Columbiformes, which includes about 42 genera and 310 species.
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Coprophagia
Coprophagia or coprophagy is the consumption of feces.
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Crop (anatomy)
A crop (sometimes also called a croup or a craw, or ingluvies) is a thin-walled expanded portion of the alimentary tract used for the storage of food prior to digestion.
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Crop milk
Crop milk is a secretion from the lining of the crop of parent birds that is regurgitated to young birds.
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Cubilin
Cubilin is a protein that in humans is encoded by the CUBN gene.
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Defecation
Defecation is the final act of digestion, by which organisms eliminate solid, semisolid, or liquid waste material from the digestive tract via the anus.
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Delta cell
Delta cells (δ-cells or D cells) are somatostatin-producing cells.
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Denaturation (biochemistry)
Denaturation is a process in which proteins or nucleic acids lose the quaternary structure, tertiary structure, and secondary structure which is present in their native state, by application of some external stress or compound such as a strong acid or base, a concentrated inorganic salt, an organic solvent (e.g., alcohol or chloroform), radiation or heat.
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Deoxyribonuclease
A deoxyribonuclease (DNase, for short) is an enzyme that catalyzes the hydrolytic cleavage of phosphodiester linkages in the DNA backbone, thus degrading DNA.
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Diazotroph
Diazotrophs are bacteria and archaea that fix atmospheric nitrogen gas into a more usable form such as ammonia.
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Diffusion
Diffusion is the net movement of molecules or atoms from a region of high concentration (or high chemical potential) to a region of low concentration (or low chemical potential) as a result of random motion of the molecules or atoms.
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Digestive enzyme
Digestive enzymes are a group of enzymes that break down polymeric macromolecules into their smaller building blocks, in order to facilitate their absorption by the body.
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Digestive system of gastropods
The digestive system of gastropods (slugs and snails of every kind) has evolved to suit almost every kind of diet and feeding behavior.
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Digestive system of humpback whales
The digestive system of humpback whales (Megaptera novaeangliae) is adapted to digest tiny crustaceans such as krill, plankton, and small fish (including herring and mackerel) which the whale filters from the ocean using its baleen, a sieve-like structure in the upper jaw.
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Diglyceride
A diglyceride, or diacylglycerol (DAG), is a glyceride consisting of two fatty acid chains covalently bonded to a glycerol molecule through ester linkages.
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Dipeptidase
Dipeptidases are enzymes secreted by enterocytes into the small intestine.
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Disaccharide
A disaccharide (also called a double sugar or bivose) is the sugar formed when two monosaccharides (simple sugars) are joined by glycosidic linkage.
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Discovery and development of proton pump inhibitors
Proton pump inhibitors (PPIs) block the gastric hydrogen potassium ATPase (H+/K+ ATPase) and inhibit gastric acid secretion.
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Duodenum
The duodenum is the first section of the small intestine in most higher vertebrates, including mammals, reptiles, and birds.
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Earthworm
An earthworm is a tube-shaped, segmented worm found in the phylum Annelida.
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Ecological niche
In ecology, a niche (CanE, or) is the fit of a species living under specific environmental conditions.
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Endosymbiont
An endosymbiont or endobiont is any organism that lives within the body or cells of another organism in a symbiotic relationship with the host body or cell, often but not always to mutual benefit.
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Entamoeba histolytica
Entamoeba histolytica is an anaerobic parasitic amoebozoan, part of the genus Entamoeba.
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Enteropeptidase
Enteropeptidase (also called enterokinase) is an enzyme produced by cells of the duodenum and is involved in digestion in humans and other animals.
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Enzyme
Enzymes are macromolecular biological catalysts.
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Epithelium
Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue.
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Erepsin
Erepsin is a protein fraction found in the intestinal juices and contains a group of enzymes that digest peptones into amino acids.
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Esophagus
The esophagus (American English) or oesophagus (British English), commonly known as the food pipe or gullet (gut), is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.
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Exopeptidase
An exopeptidase is any peptidase that catalyzes the cleavage of the terminal (or the penultimate) peptide bond; the process releases a single amino acid or dipeptide from the peptide chain.
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Fatty acid
In chemistry, particularly in biochemistry, a fatty acid is a carboxylic acid with a long aliphatic chain, which is either saturated or unsaturated.
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Feces
Feces (or faeces) are the solid or semisolid remains of the food that could not be digested in the small intestine.
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Fermentation
Fermentation is a metabolic process that consumes sugar in the absence of oxygen.
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Food
Food is any substance consumed to provide nutritional support for an organism.
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Fructose
Fructose, or fruit sugar, is a simple ketonic monosaccharide found in many plants, where it is often bonded to glucose to form the disaccharide sucrose.
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Functional group
In organic chemistry, functional groups are specific substituents or moieties within molecules that are responsible for the characteristic chemical reactions of those molecules.
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Fungus
A fungus (plural: fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms.
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G cell
In anatomy, the G cell (or γ-cell) is a type of cell in the stomach and duodenum that secretes gastrin.
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Galactose
Galactose (galacto- + -ose, "milk sugar"), sometimes abbreviated Gal, is a monosaccharide sugar that is about as sweet as glucose, and about 30% as sweet as sucrose.
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Gallbladder
In vertebrates, the gallbladder is a small hollow organ where bile is stored and concentrated before it is released into the small intestine.
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Gastric acid
Gastric acid, gastric juice or stomach acid, is a digestive fluid formed in the stomach and is composed of hydrochloric acid (HCl), potassium chloride (KCl) and sodium chloride (NaCl).
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Gastric distension
Gastric distension is bloating of the stomach when air is pumped into it.
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Gastric glands
The gastric glands are located in different regions of the stomach.
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Gastric inhibitory polypeptide
Gastric inhibitory polypeptide (GIP) or gastroinhibitory peptide, also known as the glucose-dependent insulinotropic peptide, is an inhibiting hormone of the secretin family of hormones.
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Gastrin
Gastrin is a peptide hormone that stimulates secretion of gastric acid (HCl) by the parietal cells of the stomach and aids in gastric motility.
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Gastroesophageal reflux disease
Gastroesophageal reflux disease (GERD), also known as acid reflux, is a long-term condition where stomach contents come back up into the esophagus resulting in either symptoms or complications.
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Gastrointestinal tract
The gastrointestinal tract (digestive tract, digestional tract, GI tract, GIT, gut, or alimentary canal) is an organ system within humans and other animals which takes in food, digests it to extract and absorb energy and nutrients, and expels the remaining waste as feces.
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Gastrovascular cavity
The gastrovascular cavity is the primary organ of digestion and circulation in two major animal phyla: the Cnidaria (including jellyfish and corals) and Platyhelminthes (flatworms).
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Gizzard
The gizzard, also referred to as the ventriculus, gastric mill, and gigerium, is an organ found in the digestive tract of some animals, including archosaurs (pterosaurs, crocodiles, alligators, and dinosaurs, including birds), earthworms, some gastropods, some fish, and some crustaceans.
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Glucose
Glucose is a simple sugar with the molecular formula C6H12O6.
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Glycerol
Glycerol (also called glycerine or glycerin; see spelling differences) is a simple polyol compound.
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Gut flora
Gut flora, or gut microbiota, or gastrointestinal microbiota, is the complex community of microorganisms that live in the digestive tracts of humans and other animals, including insects.
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Haptocorrin
Haptocorrin also known as transcobalamin-1 (TC-1) or cobalophilin is a transcobalamin protein that in humans is encoded by the TCN1 gene.
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Hemicellulose
A hemicellulose (also known as polyose) is any of several heteropolymers (matrix polysaccharides), such as arabinoxylans, present along with cellulose in almost all plant cell walls.
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Herbivore
A herbivore is an animal anatomically and physiologically adapted to eating plant material, for example foliage, for the main component of its diet.
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Histamine
Histamine is an organic nitrogenous compound involved in local immune responses, as well as regulating physiological function in the gut and acting as a neurotransmitter for the brain, spinal cord, and uterus.
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Human digestive system
The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder).
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Human mouth
In human anatomy, the mouth is the first portion of the alimentary canal that receives food and produces saliva.
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Hydrochloric acid
Hydrochloric acid is a colorless inorganic chemical system with the formula.
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Hydrogen
Hydrogen is a chemical element with symbol H and atomic number 1.
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Hypothalamus
The hypothalamus(from Greek ὑπό, "under" and θάλαμος, thalamus) is a portion of the brain that contains a number of small nuclei with a variety of functions.
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Ingestion
Ingestion is the consumption of a substance by an organism.
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Innate immune system
The innate immune system, also known as the non-specific immune system or in-born immunity system, is an important subsystem of the overall immune system that comprises the cells and mechanisms involved in the defense of the host from infection by other organisms.
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Intestinal gland
In histology, an intestinal gland (also crypt of Lieberkühn and intestinal crypt) is a gland found in the intestinal epithelium lining of the small intestine and large intestine (colon).
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Intestinal villus
Intestinal villi (singular: villus) are small, finger-like projections that extend into the lumen of the small intestine.
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Intrinsic factor
Intrinsic factor (IF), also known as gastric intrinsic factor (GIF), is a glycoprotein produced by the parietal cells of the stomach.
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Kingdom (biology)
In biology, kingdom (Latin: regnum, plural regna) is the second highest taxonomic rank, just below domain.
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Lactase
Lactase is an enzyme produced by many organisms.
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Lactose
Lactose is a disaccharide.
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Large intestine
The large intestine, also known as the large bowel or colon, is the last part of the gastrointestinal tract and of the digestive system in vertebrates.
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Lingual lipase
Lingual lipase is a member of a family of digestive enzymes called triacylglycerol lipases, EC 3.1.1.3, that use the catalytic triad of aspartate, histidine, and serine to hydrolyze medium and long-chain triglycerides into partial glycerides and free fatty acids.
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Liver
The liver, an organ only found in vertebrates, detoxifies various metabolites, synthesizes proteins, and produces biochemicals necessary for digestion.
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Lysosome
A lysosome is a membrane-bound organelle found in nearly all animal cells.
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Macaw
Macaws are long-tailed, often colorful New World parrots.
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Maltose
Maltose, also known as maltobiose or malt sugar, is a disaccharide formed from two units of glucose joined with an α(1→4) bond. In the isomer isomaltose, the two glucose molecules are joined with an α(1→6) bond. Maltose is the two-unit member of the amylose homologous series, the key structural motif of starch. When beta-amylase breaks down starch, it removes two glucose units at a time, producing maltose. An example of this reaction is found in germinating seeds, which is why it was named after malt. Unlike sucrose, it is a reducing sugar.
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Mammal
Mammals are the vertebrates within the class Mammalia (from Latin mamma "breast"), a clade of endothermic amniotes distinguished from reptiles (including birds) by the possession of a neocortex (a region of the brain), hair, three middle ear bones, and mammary glands.
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Medulla oblongata
The medulla oblongata (or medulla) is located in the brainstem, anterior and partially inferior to the cerebellum.
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Membrane fusion protein
Membrane fusion proteins (not to be confused with chimeric or fusion proteins) are proteins that cause fusion of biological membranes.
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Microvillus
Microvilli (singular: microvillus) are microscopic cellular membrane protrusions that increase the surface area for diffusion and minimize any increase in volume, and are involved in a wide variety of functions, including absorption, secretion, cellular adhesion, and mechanotransduction.
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Migrating motor complex
Migrating motor complexes (or migrating myoelectric complex or migratory motor complex or migratory myoelectric complex or MMC) are waves of electrical activity that sweep through the intestines in a regular cycle during fasting.
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Molecular diffusion
Molecular diffusion, often simply called diffusion, is the thermal motion of all (liquid or gas) particles at temperatures above absolute zero.
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Monosaccharide
Monosaccharides (from Greek monos: single, sacchar: sugar), also called simple sugars, are the most basic units of carbohydrates.
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Motilin
Motilin is a 22-amino acid polypeptide hormone in the motilin family that, in humans, is encoded by the MLN gene.
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Mouth
In animal anatomy, the mouth, also known as the oral cavity, buccal cavity, or in Latin cavum oris, is the opening through which many animals take in food and issue vocal sounds.
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Mucous membrane
A mucous membrane or mucosa is a membrane that lines various cavities in the body and covers the surface of internal organs.
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Mucus
Mucus is a slippery aqueous secretion produced by, and covering, mucous membranes.
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Nuclease
A nuclease (also archaically known as nucleodepolymerase or polynucleotidase) is an enzyme capable of cleaving the phosphodiester bonds between monomers of nucleic acids.
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Nucleotide
Nucleotides are organic molecules that serve as the monomer units for forming the nucleic acid polymers deoxyribonucleic acid (DNA) and ribonucleic acid (RNA), both of which are essential biomolecules within all life-forms on Earth.
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Nutrition
Nutrition is the science that interprets the interaction of nutrients and other substances in food in relation to maintenance, growth, reproduction, health and disease of an organism.
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Omasum
The omasum, also known as the bible, the fardel, the manyplies and the psalterium, is the third compartment of the stomach in ruminants.
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Opine
Opines are low molecular weight compounds found in plant crown gall tumors or hairy root tumors produced by parasitic bacteria of the genus Agrobacterium.
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Oral mucosa
The oral mucosa is the mucous membrane lining the inside of the mouth and consists of stratified squamous epithelium termed oral epithelium and an underlying connective tissue termed lamina propria.
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Organism
In biology, an organism (from Greek: ὀργανισμός, organismos) is any individual entity that exhibits the properties of life.
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Osmosis
Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides.
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Pancreas
The pancreas is a glandular organ in the digestive system and endocrine system of vertebrates.
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Pancreatic duct
The pancreatic duct, or duct of Wirsung (also, the major pancreatic duct due to the existence of an accessory pancreatic duct), is a duct joining the pancreas to the common bile duct to supply pancreatic juice provided from the exocrine pancreas which aids in digestion.
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Pancreatic juice
Pancreatic juice is a liquid secreted by the pancreas, which contains a variety of enzymes, including trypsinogen, chymotrypsinogen, elastase, carboxypeptidase, pancreatic lipase, nucleases and amylase.
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Pancreatic lipase family
Triglyceride lipases are a family of lipolytic enzymes that hydrolyse ester linkages of triglycerides.
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Parietal cell
Parietal cells (also known as oxyntic or delomorphous cells), are the epithelial cells that secrete hydrochloric acid (HCl) and intrinsic factor.
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Pathogen
In biology, a pathogen (πάθος pathos "suffering, passion" and -γενής -genēs "producer of") or a '''germ''' in the oldest and broadest sense is anything that can produce disease; the term came into use in the 1880s.
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Pepsin
Pepsin is an endopeptidase that breaks down proteins into smaller peptides (that is, a protease).
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Peptide
Peptides (from Gr.: πεπτός, peptós "digested"; derived from πέσσειν, péssein "to digest") are short chains of amino acid monomers linked by peptide (amide) bonds.
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Peristalsis
Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.
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PH
In chemistry, pH is a logarithmic scale used to specify the acidity or basicity of an aqueous solution.
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Phagocytosis
In cell biology, phagocytosis is the process by which a cell—often a phagocyte or a protist—engulfs a solid particle to form an internal compartment known as a phagosome.
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Phagolysosome
In biology, a phagolysosome, or endolysosome, is a cytoplasmic body formed by the fusion of a phagosome with a lysosome in a process that occurs during phagocytosis. Formation of phagolysosomes is essential for the intracellular destruction of microorganisms and pathogens.
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Phagosome
In cell biology, a phagosome is a vesicle formed around a particle engulfed by a phagocyte via phagocytosis.
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Pharynx
The pharynx (plural: pharynges) is the part of the throat that is behind the mouth and nasal cavity and above the esophagus and the larynx, or the tubes going down to the stomach and the lungs.
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Polysaccharide
Polysaccharides are polymeric carbohydrate molecules composed of long chains of monosaccharide units bound together by glycosidic linkages, and on hydrolysis give the constituent monosaccharides or oligosaccharides.
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Propionic acid
Propionic acid (from the Greek words protos, meaning "first", and pion, meaning "fat"; also known as propanoic acid) is a naturally occurring carboxylic acid with chemical formula C2H5COOH.
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Protein
Proteins are large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues.
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Proteolysis
Proteolysis is the breakdown of proteins into smaller polypeptides or amino acids.
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Protozoa
Protozoa (also protozoan, plural protozoans) is an informal term for single-celled eukaryotes, either free-living or parasitic, which feed on organic matter such as other microorganisms or organic tissues and debris.
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Pylorus
The pylorus, or pyloric part, connects the stomach to the duodenum.
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Rabbit
Rabbits are small mammals in the family Leporidae of the order Lagomorpha (along with the hare and the pika).
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Rectum
The rectum is the final straight portion of the large intestine in humans and some other mammals, and the gut in others.
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Red blood cell
Red blood cells-- also known as RBCs, red cells, red blood corpuscles, haematids, erythroid cells or erythrocytes (from Greek erythros for "red" and kytos for "hollow vessel", with -cyte translated as "cell" in modern usage), are the most common type of blood cell and the vertebrate's principal means of delivering oxygen (O2) to the body tissues—via blood flow through the circulatory system.
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Regurgitation (digestion)
Regurgitation is the expulsion of material from the pharynx, or esophagus, usually characterized by the presence of undigested food or blood.
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Reticulum (anatomy)
The reticulum is the first chamber in the alimentary canal of a ruminant animal.
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Rhizobia
Rhizobia are bacteria that fix nitrogen (diazotrophs) after becoming established inside root nodules of legumes (Fabaceae).
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Rhizobium rhizogenes
Rhizobium rhizogenes (formerly Agrobacterium rhizogenes) is a Gram-negative soil bacterium that produces hairy root disease in dicotyledonous plants.
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Ribonuclease
Ribonuclease (commonly abbreviated RNase) is a type of nuclease that catalyzes the degradation of RNA into smaller components.
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Rodent
Rodents (from Latin rodere, "to gnaw") are mammals of the order Rodentia, which are characterized by a single pair of continuously growing incisors in each of the upper and lower jaws.
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Rumen
The rumen, also known as a paunch, forms the larger part of the reticulorumen, which is the first chamber in the alimentary canal of ruminant animals.
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Ruminant
Ruminants are mammals that are able to acquire nutrients from plant-based food by fermenting it in a specialized stomach prior to digestion, principally through microbial actions.
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Saliva
Saliva is a watery substance formed in the mouths of animals, secreted by the salivary glands.
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Salivary gland
The salivary glands in mammals are exocrine glands that produce saliva through a system of ducts.
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Secretin
Secretin is a hormone that regulates water homeostasis throughout the body and influences the environment of the duodenum by regulating secretions in the stomach, pancreas, and liver.
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Secretion
Secretion is the movement of material from one point to another, e.g. secreted chemical substance from a cell or gland.
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Shark anatomy
Shark anatomy has points of difference with the anatomy of bony and other types of fish.
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Short-chain fatty acid
Short-chain fatty acids (SCFAs), also referred to as volatile fatty acids (VFAs), are fatty acids with two to six carbon atoms.
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Small intestine
The small intestine or small bowel is the part of the gastrointestinal tract between the stomach and the large intestine, and is where most of the end absorption of food takes place.
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Somatostatin
Somatostatin, also known as growth hormone-inhibiting hormone (GHIH) or by several other names, is a peptide hormone that regulates the endocrine system and affects neurotransmission and cell proliferation via interaction with G protein-coupled somatostatin receptors and inhibition of the release of numerous secondary hormones.
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Spider
Spiders (order Araneae) are air-breathing arthropods that have eight legs and chelicerae with fangs that inject venom.
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Squid
Squid are cephalopods of the two orders Myopsida and Oegopsida, which were formerly regarded as two suborders of the order Teuthida, however recent research shows Teuthida to be paraphyletic.
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Starch
Starch or amylum is a polymeric carbohydrate consisting of a large number of glucose units joined by glycosidic bonds.
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Stomach
The stomach (from ancient Greek στόμαχος, stomachos, stoma means mouth) is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates.
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Sublingual administration
Sublingual (abbreviated SL), from the Latin for "under the tongue", refers to the pharmacological route of administration by which substances diffuse into the blood through tissues under the tongue.
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Sucrase
Sucrase is a digestive enzyme secreted in the small intestine.
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Sucrose
Sucrose is common table sugar.
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Surface area
The surface area of a solid object is a measure of the total area that the surface of the object occupies.
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Swallowing
Swallowing, sometimes called deglutition in scientific contexts, is the process in the human or animal body that allows for a substance to pass from the mouth, to the pharynx, and into the esophagus, while shutting the epiglottis.
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Sympathetic nervous system
The sympathetic nervous system (SNS) is one of the two main divisions of the autonomic nervous system, the other being the parasympathetic nervous system.
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Tongue
The tongue is a muscular organ in the mouth of most vertebrates that manipulates food for mastication, and is used in the act of swallowing.
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Triglyceride
A triglyceride (TG, triacylglycerol, TAG, or triacylglyceride) is an ester derived from glycerol and three fatty acids (from tri- and glyceride).
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Trypsin
Trypsin is a serine protease from the PA clan superfamily, found in the digestive system of many vertebrates, where it hydrolyzes proteins.
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Trypsinogen
Trypsinogen (EC 3.4.23.18/20/21/23/24/26) is the precursor form or zymogen of trypsin, a digestive enzyme.
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Type three secretion system
Type three secretion system (often written Type III secretion system and abbreviated TTSS or T3SS, also called Injectisome) is a protein appendage found in several Gram-negative bacteria.
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Vacuole
A vacuole is a membrane-bound organelle which is present in all plant and fungal cells and some protist, animal and bacterial cells.
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Vagus nerve
The vagus nerve, historically cited as the pneumogastric nerve, is the tenth cranial nerve or CN X, and interfaces with parasympathetic control of the heart, lungs, and digestive tract.
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Venus flytrap
The Venus flytrap (also referred to as Venus's flytrap or Venus' flytrap), Dionaea muscipula, is a carnivorous plant native to subtropical wetlands on the East Coast of the United States in North Carolina and South Carolina.
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Vertebrate
Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).
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Vesicle (biology and chemistry)
In cell biology, a vesicle is a small structure within a cell, or extracellular, consisting of fluid enclosed by a lipid bilayer.
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Virulence
Virulence is a pathogen's or microbe's ability to infect or damage a host.
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Virulence-related outer membrane protein family
Virulence-related outer membrane proteins are expressed in Gram-negative bacteria and are essential to bacterial survival within macrophages and for eukaryotic cell invasion.
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Vitamin B12
Vitamin B12, also called cobalamin, is a water-soluble vitamin that is involved in the metabolism of every cell of the human body: it is a cofactor in DNA synthesis, and in both fatty acid and amino acid metabolism.
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Vitamin K
Vitamin K is a group of structurally similar, fat-soluble vitamins that the human body requires for complete synthesis of certain proteins that are prerequisites for blood coagulation (K from Koagulation, Danish for "coagulation") and which the body also needs for controlling binding of calcium in bones and other tissues.
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Zymogen
A zymogen, also called a proenzyme, is an inactive precursor of an enzyme.
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Absorption (biology), Absorption (digestive), Breaking down food, Chemical digestion, Digestant, Digested, Digestibility, Digestible, Digesting, Digestive Organs, Digestive System, Digestive hormone, Disgestive System, Fat digestion, Lipid digestion, Mechanics of the digestive tract, Period of digestion.
References
[1] https://en.wikipedia.org/wiki/Digestion