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138 relations: Abiotic component, Adam's apple, Adaptation, Amniote, Amphibian, Analogy, Androgen, Animal, Arthropod, Baculum, Bartholin's gland, Biological life cycle, Biotic component, Birth, Body hair, Breast, Bulbourethral gland, Caecilian, Cephalopod, Cervical dilation, Cervix, Christian Konrad Sprengel, Clitoris, Cloaca, Coleoidea, Echidna, Egg, Egg cell, Ejaculation, Endometrium, Epididymis, Erection, External fertilization, Facial hair, Fallopian tube, Feces, Female, Fern, Fertilisation, Fertility, Fetus, Fin, Fish, Fitness (biology), Flower, Flowering plant, Gamete, Gene, Gestation, Gonad, ..., Gonochorism, Green algae, Gymnosperm, Hectocotylus, Hermaphrodite, Hormone, Hornwort, Human body, Human fertilization, Human reproductive system, Human sexual activity, Human sexuality, Infection, Insect, Internal fertilization, Intromittent organ, Invertebrate, Kidney, Labia, Lactation, Live-bearing aquarium fish, Male, Mammal, Mammary gland, Mantle (mollusc), Marchantiophyta, Marsupial, Mating, Meiosis, Menstrual cycle, Menstruation, Moss, Muscle, Nidamental gland, Offspring, Organ system, Organism, Ovary, Oviduct, Oviparity, Ovipositor, Ovoviviparity, Parental care, Pelvis, Penile sheath, Penis, Pheromone, Pinophyta, Pituitary gland, Plant reproductive morphology, Platypus, Pollination, Pouch (marsupial), Pregnancy, Propagule, Prostate, Reproduction, Reproductive system disease, Reptile, Scrotum, Secondary sex characteristic, Semen, Seminal vesicle, Sex, Sex organ, Sexual differentiation, Sexual dimorphism, Sexual intercourse, Sexual reproduction, Sexually transmitted infection, Spawn (biology), Species, Sperm, Spermatheca, Spermatophore, Spermatozoon, Teat, Teleomorph, anamorph and holomorph, Testicle, Testosterone, Urethra, Urine, Uterus, Vagina, Vas deferens, Vertebrate, Viviparity, Vulva. Expand index (88 more) »
Abiotic component
In biology and ecology, abiotic components or abiotic factors are non-living chemical and physical parts of the environment that affect living organisms and the functioning of ecosystems.
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Adam's apple
The Adam's apple, or laryngeal prominence, is a feature of the human neck, and is the lump or protrusion that is formed by the angle of the thyroid cartilage surrounding the larynx seen especially in males.
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Adaptation
In biology, adaptation has three related meanings.
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Amniote
Amniotes (from Greek ἀμνίον amnion, "membrane surrounding the fetus", earlier "bowl in which the blood of sacrificed animals was caught", from ἀμνός amnos, "lamb") are a clade of tetrapod vertebrates comprising the reptiles, birds, and mammals.
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Amphibian
Amphibians are ectothermic, tetrapod vertebrates of the class Amphibia.
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Analogy
Analogy (from Greek ἀναλογία, analogia, "proportion", from ana- "upon, according to" + logos "ratio") is a cognitive process of transferring information or meaning from a particular subject (the analog, or source) to another (the target), or a linguistic expression corresponding to such a process.
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Androgen
An androgen (from Greek andr-, the stem of the word meaning "man") is any natural or synthetic steroid hormone which regulates the development and maintenance of male characteristics in vertebrates by binding to androgen receptors.
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Animal
Animals are multicellular eukaryotic organisms that form the biological kingdom Animalia.
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Arthropod
An arthropod (from Greek ἄρθρον arthron, "joint" and πούς pous, "foot") is an invertebrate animal having an exoskeleton (external skeleton), a segmented body, and paired jointed appendages.
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Baculum
The baculum (also penis bone, penile bone, or os penis, or os priapi) is a bone found in the penis of many placental mammals.
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Bartholin's gland
The Bartholin's glands (also called Bartholin glands or greater vestibular glands) are two pea sized compound racemose glandsManual of Obstetrics.
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Biological life cycle
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of changes in form that an organism undergoes, returning to the starting state.
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Biotic component
Biotic components or biotic factors, can be described as any living component that affects another organism, or shapes the ecosystem.
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Birth
Birth is the act or process of bearing or bringing forth offspring.
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Body hair
Body hair, or androgenic hair, is the terminal hair that develops on the human body during and after puberty.
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Breast
The breast is one of two prominences located on the upper ventral region of the torso of primates.
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Bulbourethral gland
A bulbourethral gland, also called a Cowper's gland for English anatomist William Cowper, is one of two small exocrine glands in the reproductive system of many male mammals (of all domesticated animals, they are only absent in the dog).
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Caecilian
Caecilians (New Latin for "blind ones") are a group of limbless, serpentine amphibians.
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Cephalopod
A cephalopod is any member of the molluscan class Cephalopoda (Greek plural κεφαλόποδα, kephalópoda; "head-feet") such as a squid, octopus or nautilus.
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Cervical dilation
Cervical dilation (or cervical dilatation) is the opening of the cervix, the entrance to the uterus, during childbirth, miscarriage, induced abortion, or gynecological surgery.
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Cervix
The cervix or cervix uteri (neck of the uterus) is the lower part of the uterus in the human female reproductive system.
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Christian Konrad Sprengel
Christian Konrad Sprengel (22 September 1750 – 7 April 1816) was a German naturalist, theologist, and teacher.
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Clitoris
The clitoris is a female sex organ present in mammals, ostriches and a limited number of other animals.
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Cloaca
In animal anatomy, a cloaca (plural cloacae or) is the posterior orifice that serves as the only opening for the digestive, reproductive, and urinary tracts (if present) of many vertebrate animals, opening at the vent.
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Coleoidea
Subclass Coleoidea, or Dibranchiata, is the grouping of cephalopods containing all the various taxa popularly thought of as "soft-bodied" or "shell-less," i.e., octopus, squid and cuttlefish.
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Echidna
Echidnas, sometimes known as spiny anteaters, belong to the family Tachyglossidae in the monotreme order of egg-laying mammals.
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Egg
An egg is the organic vessel containing the zygote in which an animal embryo develops until it can survive on its own; at which point the animal hatches.
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Egg cell
The egg cell, or ovum (plural ova), is the female reproductive cell (gamete) in oogamous organisms.
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Ejaculation
Ejaculation is the discharge of semen (normally containing sperm) from the male reproductory tract, usually accompanied by orgasm.
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Endometrium
The endometrium is the inner epithelial layer, along with its mucous membrane, of the mammalian uterus.
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Epididymis
The epididymis (plural: epididymides or) is a tube that connects a testicle to a vas deferens in the male reproductive system.
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Erection
An erection (clinically: penile erection or penile tumescence) is a physiological phenomenon in which the penis becomes firm, engorged, and enlarged.
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External fertilization
External fertilization is a male organism’s sperm fertilizing a female organism’s egg outside of the female’s body.
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Facial hair
Facial hair is hair grown on the face, usually on the chin, cheeks, and upper lip region.
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Fallopian tube
The Fallopian tubes, also known as uterine tubes or salpinges (singular salpinx), are two very fine tubes lined with ciliated epithelia, leading from the ovaries of female mammals into the uterus, via the uterotubal junction.
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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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Female
Female (♀) is the sex of an organism, or a part of an organism, that produces non-mobile ova (egg cells).
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Fern
A fern is a member of a group of vascular plants that reproduce via spores and have neither seeds nor flowers.
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Fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, conception, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism.
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Fertility
Fertility is the natural capability to produce offspring.
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Fetus
A fetus is a stage in the prenatal development of viviparous organisms.
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Fin
A fin is a thin component or appendage attached to a larger body or structure.
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Fish
Fish are gill-bearing aquatic craniate animals that lack limbs with digits.
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Fitness (biology)
Fitness (often denoted w or ω in population genetics models) is the quantitative representation of natural and sexual selection within evolutionary biology.
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Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Magnoliophyta, also called angiosperms).
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Flowering plant
The flowering plants, also known as angiosperms, Angiospermae or Magnoliophyta, are the most diverse group of land plants, with 416 families, approximately 13,164 known genera and c. 295,383 known species.
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Gamete
A gamete (from Ancient Greek γαμετή gamete from gamein "to marry") is a haploid cell that fuses with another haploid cell during fertilization (conception) in organisms that sexually reproduce.
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Gene
In biology, a gene is a sequence of DNA or RNA that codes for a molecule that has a function.
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Gestation
Gestation is the carrying of an embryo or fetus inside viviparous animals.
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Gonad
A gonad or sex gland or reproductive gland is a mixed gland that produces the gametes (sex cells) and sex hormones of an organism.
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Gonochorism
In biology, gonochorism (Greek offspring + disperse) or unisexualism or gonochory describes the state of having just one of at least two distinct sexes in any one individual organism.
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Green algae
The green algae (singular: green alga) are a large, informal grouping of algae consisting of the Chlorophyta and Charophyta/Streptophyta, which are now placed in separate divisions, as well as the more basal Mesostigmatophyceae, Chlorokybophyceae and Spirotaenia.
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Gymnosperm
The gymnosperms are a group of seed-producing plants that includes conifers, cycads, Ginkgo, and gnetophytes.
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Hectocotylus
A hectocotylus (plural: hectocotyli) is one of the arms of male cephalopods that is specialized to store and transfer spermatophores to the female.
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Hermaphrodite
In biology, a hermaphrodite is an organism that has complete or partial reproductive organs and produces gametes normally associated with both male and female sexes.
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Hormone
A hormone (from the Greek participle “ὁρμῶ”, "to set in motion, urge on") is any member of a class of signaling molecules produced by glands in multicellular organisms that are transported by the circulatory system to target distant organs to regulate physiology and behaviour.
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Hornwort
Hornworts are a group of non-vascular plants constituting the division Anthocerotophyta.
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Human body
The human body is the entire structure of a human being.
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Human fertilization
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube.
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Human reproductive system
The human reproductive system usually involves internal fertilization by sexual intercourse.
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Human sexual activity
Human sexual activity, human sexual practice or human sexual behaviour is the manner in which humans experience and express their sexuality.
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Human sexuality
Human sexuality is the way people experience and express themselves sexually.
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Infection
Infection is the invasion of an organism's body tissues by disease-causing agents, their multiplication, and the reaction of host tissues to the infectious agents and the toxins they produce.
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Insect
Insects or Insecta (from Latin insectum) are hexapod invertebrates and the largest group within the arthropod phylum.
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Internal fertilization
Internal fertilization is the union of an egg cell with a sperm during sexual reproduction inside the body of a parent.
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Intromittent organ
An intromittent organ is a general term for an external organ of a male organism that is specialized to deliver sperm during copulation.
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Invertebrate
Invertebrates are animals that neither possess nor develop a vertebral column (commonly known as a backbone or spine), derived from the notochord.
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Kidney
The kidneys are two bean-shaped organs present in left and right sides of the body in vertebrates.
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Labia
The labia are part of the female genitalia; they are the major externally visible portions of the vulva.
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Lactation
Lactation describes the secretion of milk from the mammary glands and the period of time that a mother lactates to feed her young.
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Live-bearing aquarium fish
Live-bearing aquarium fish, often simply called livebearers, are fish that retain the eggs inside the body and give birth to live, free-swimming young.
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Male
A male (♂) organism is the physiological sex that produces sperm.
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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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Mammary gland
A mammary gland is an exocrine gland in mammals that produces milk to feed young offspring.
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Mantle (mollusc)
The mantle (also known by the Latin word pallium meaning mantle, robe or cloak, adjective pallial) is a significant part of the anatomy of molluscs: it is the dorsal body wall which covers the visceral mass and usually protrudes in the form of flaps well beyond the visceral mass itself.
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Marchantiophyta
The Marchantiophyta are a division of non-vascular land plants commonly referred to as hepatics or liverworts.
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Marsupial
Marsupials are any members of the mammalian infraclass Marsupialia.
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Mating
In biology, mating (or mateing in British English) is the pairing of either opposite-sex or hermaphroditic organisms, usually for the purposes of sexual reproduction.
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Meiosis
Meiosis (from Greek μείωσις, meiosis, which means lessening) is a specialized type of cell division that reduces the chromosome number by half, creating four haploid cells, each genetically distinct from the parent cell that gave rise to them.
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Menstrual cycle
The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible.
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Menstruation
Menstruation, also known as a period or monthly, is the regular discharge of blood and mucosal tissue (known as menses) from the inner lining of the uterus through the vagina.
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Moss
Mosses are small flowerless plants that typically grow in dense green clumps or mats, often in damp or shady locations.
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Muscle
Muscle is a soft tissue found in most animals.
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Nidamental gland
Nidamental glands are internal organs found in some elasmobranchs and certain molluscs, including cephalopods (specifically Decapodiformes and nautiluses) and gastropods.
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Offspring
In biology, offspring are the young born of living organisms, produced either by a single organism or, in the case of sexual reproduction, two organisms.
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Organ system
In biology, an organ system is a group of organs that work together to perform one or more functions.
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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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Ovary
The ovary is an organ found in the female reproductive system that produces an ovum.
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Oviduct
In vertebrates, other than mammals, the passageway from the ovaries to the outside of the body is known as the oviduct.
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Oviparity
Oviparous animals are animals that lay eggs, with little or no other embryonic development within the mother.
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Ovipositor
The ovipositor is an organ used by some animals for the laying of eggs.
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Ovoviviparity
Ovoviviparity, ovovivipary, or ovivipary, is a mode of reproduction in animals in which embryos that develop inside eggs remain in the mother's body until they are ready to hatch.
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Parental care
Parental care is a behavioural and evolutionary strategy adopted by some animals, making a parental investment into the evolutionary fitness of their offspring.
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Pelvis
The pelvis (plural pelves or pelvises) is either the lower part of the trunk of the human body between the abdomen and the thighs (sometimes also called pelvic region of the trunk) or the skeleton embedded in it (sometimes also called bony pelvis, or pelvic skeleton).
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Penile sheath
Almost all mammal penises have foreskins or prepuce, although in non-human cases the foreskin is usually a sheath (sometimes called the preputial sheath or penile sheath) into which the whole penis is retracted.
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Penis
A penis (plural penises or penes) is the primary sexual organ that male animals use to inseminate sexually receptive mates (usually females and hermaphrodites) during copulation.
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Pheromone
A pheromone (from Ancient Greek φέρω phero "to bear" and hormone, from Ancient Greek ὁρμή "impetus") is a secreted or excreted chemical factor that triggers a social response in members of the same species.
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Pinophyta
The Pinophyta, also known as Coniferophyta or Coniferae, or commonly as conifers, are a division of vascular land plants containing a single extant class, Pinopsida.
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Pituitary gland
An explanation of the development of the pituitary gland (Hypophysis cerebri) & the congenital anomalies. In vertebrate anatomy, the pituitary gland, or hypophysis, is an endocrine gland about the size of a pea and weighing in humans.
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Plant reproductive morphology
Plant reproductive morphology is the study of the physical form and structure (the morphology) of those parts of plants directly or indirectly concerned with sexual reproduction.
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Platypus
The platypus (Ornithorhynchus anatinus), sometimes referred to as the duck-billed platypus, is a semiaquatic egg-laying mammal endemic to eastern Australia, including Tasmania.
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Pollination
Pollination is the transfer of pollen from a male part of a plant to a female part of a plant, enabling later fertilisation and the production of seeds, most often by an animal or by wind.
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Pouch (marsupial)
The pouch is a distinguishing feature of female marsupials (and rarely in the males as in the water opossumNogueira, José Carlos, et al. "" Journal of mammalogy 85.5 (2004): 834-841. and the extinct thylacine); the name marsupial is derived from the Latin marsupium, meaning "pouch".
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Pregnancy
Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman.
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Propagule
In biology, a propagule is any material that functions in propagating an organism to the next stage in its life cycle, such as by dispersal.
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Prostate
The prostate (from Ancient Greek προστάτης, prostates, literally "one who stands before", "protector", "guardian") is a compound tubuloalveolar exocrine gland of the male reproductive system in most mammals.
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Reproduction
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parents".
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Reproductive system disease
A reproductive system disease is any disease of the reproductive system.
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Reptile
Reptiles are tetrapod animals in the class Reptilia, comprising today's turtles, crocodilians, snakes, amphisbaenians, lizards, tuatara, and their extinct relatives.
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Scrotum
The scrotum is an anatomical male reproductive structure that consists of a suspended dual-chambered sack of skin and smooth muscle that is present in most terrestrial male mammals and located under the penis.
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Secondary sex characteristic
Secondary sex characteristics are features that appear during puberty in humans, and at sexual maturity in other animals.
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Semen
Semen, also known as seminal fluid, is an organic fluid that may contain spermatozoa.
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Seminal vesicle
The seminal vesicles (glandulae vesiculosae), vesicular glands, or seminal glands, are a pair of simple tubular glands posteroinferior to the urinary bladder of some male mammals.
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Sex
Organisms of many species are specialized into male and female varieties, each known as a sex. Sexual reproduction involves the combining and mixing of genetic traits: specialized cells known as gametes combine to form offspring that inherit traits from each parent.
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Sex organ
A sex organ (or reproductive organ) is any part of an animal's body that is involved in sexual reproduction.
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Sexual differentiation
Sexual differentiation is the process of development of the differences between males and females from an undifferentiated zygote.
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Sexual dimorphism
Sexual dimorphism is the condition where the two sexes of the same species exhibit different characteristics beyond the differences in their sexual organs.
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Sexual intercourse
Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.
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Sexual reproduction
Sexual reproduction is a form of reproduction where two morphologically distinct types of specialized reproductive cells called gametes fuse together, involving a female's large ovum (or egg) and a male's smaller sperm.
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Sexually transmitted infection
Sexually transmitted infections (STI), also referred to as sexually transmitted diseases (STD) or venereal diseases (VD), are infections that are commonly spread by sexual activity, especially vaginal intercourse, anal sex and oral sex.
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Spawn (biology)
Spawn is the eggs and sperm released or deposited into water by aquatic animals.
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Species
In biology, a species is the basic unit of classification and a taxonomic rank, as well as a unit of biodiversity, but it has proven difficult to find a satisfactory definition.
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Sperm
Sperm is the male reproductive cell and is derived from the Greek word (σπέρμα) sperma (meaning "seed").
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Spermatheca
The spermatheca (pronounced plural: spermathecae), also called receptaculum seminis (plural: receptacula seminis), is an organ of the female reproductive tract in insects, e.g. bees, some molluscs, oligochaeta worms and certain other invertebrates and vertebrates.
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Spermatophore
A spermatophore or sperm ampulla is a capsule or mass containing spermatozoa created by males of various animal species, especially salamanders and arthropods, and transferred in entirety to the female's ovipore during reproduction.
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Spermatozoon
A spermatozoon (pronounced, alternate spelling spermatozoön; plural spermatozoa; from σπέρμα "seed" and ζῷον "living being") is a motile sperm cell, or moving form of the haploid cell that is the male gamete.
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Teat
A teat is the projection from the udder or mammary glands of mammals from which milk flows or is ejected for the purpose of feeding young.
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Teleomorph, anamorph and holomorph
In mycology, the terms teleomorph, anamorph, and holomorph apply to portions of the life cycles of fungi in the phyla Ascomycota and Basidiomycota.
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Testicle
The testicle or testis is the male reproductive gland in all animals, including humans.
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Testosterone
Testosterone is the primary male sex hormone and an anabolic steroid.
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Urethra
In anatomy, the urethra (from Greek οὐρήθρα – ourḗthrā) is a tube that connects the urinary bladder to the urinary meatus for the removal of urine from the body.
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Urine
Urine is a liquid by-product of metabolism in humans and in many animals.
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Uterus
The uterus (from Latin "uterus", plural uteri) or womb is a major female hormone-responsive secondary sex organ of the reproductive system in humans and most other mammals.
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Vagina
In mammals, the vagina is the elastic, muscular part of the female genital tract.
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Vas deferens
The vas deferens (Latin: "carrying-away vessel"; plural: vasa deferentia), also called ductus deferens (Latin: "carrying-away duct"; plural: ductus deferentes), is part of the male reproductive system of many vertebrates; these vasa transport sperm from the epididymis to the ejaculatory ducts in anticipation of ejaculation.
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Vertebrate
Vertebrates comprise all species of animals within the subphylum Vertebrata (chordates with backbones).
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Viviparity
Among animals, viviparity is development of the embryo inside the body of the parent, eventually leading to live birth, as opposed to reproduction by laying eggs that complete their incubation outside the parental body.
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Vulva
The vulva (wrapper, covering, plural vulvae or vulvas) consists of the external female sex organs.
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Animal female reproductive system, Animal male reproductive system, Female organs, Female pelvic organs, Female urogenital disease, Genital neoplasms, female, Genital system, Genital systems, Genitalia, female, Human Reproductive System, Human anatomy/Reproductive system, Male organs, Mammal genitalia, Mammal reproductive system, Reproduction system, Reproductive System, Reproductive systems, Reproductive tract, Systema reproductionis.
References
[1] https://en.wikipedia.org/wiki/Reproductive_system
