Get it on Google Play
New! Download Unionpedia on your Android™ device!
Faster access than browser!

Grey matter

Index Grey matter

Grey matter (or gray matter) is a major component of the central nervous system, consisting of neuronal cell bodies, neuropil (dendrites and myelinated as well as unmyelinated axons), glial cells (astrocytes and oligodendrocytes), synapses, and capillaries. [1]

65 relations: Alcoholic drink, Amygdala, Anterior grey column, Astrocyte, Axon, Basal ganglia, Brain, Brainstem, Cannabis, Capillary, Central nervous system, Cerebellum, Cerebral cortex, Cerebral hemisphere, Classical Latin, Cranial nerve nucleus, Dendrite, Dentate nucleus, Dorsal column–medial lemniscus pathway, Emboliform nucleus, Fastigial nucleus, French language, Globose nucleus, Globus pallidus, Gray matter heterotopia, Grey column, Grey commissure, Hippocampus, HPS stain, Hypothalamus, Interneuron, Lateral grey column, Micrograph, Motor neuron, Myelin, Neuroglia, Neuron, Neuropil, Nucleus accumbens, Oligodendrocyte, Olivary body, Posterior grey column, Prefrontal cortex, Projection fiber, Proprioception, Putamen, Pyramidal tracts, Red nucleus, Rexed laminae, Sensory neuron, ..., Septal nuclei, Soma (biology), Somatosensory system, Spinal cord, Spinal interneuron, Spinothalamic tract, Substantia nigra, Subthalamus, Synapse, Temporal lobe, Terminologia Anatomica, Thalamus, Vertebra, Vibration, White matter. Expand index (15 more) »

Alcoholic drink

An alcoholic drink (or alcoholic beverage) is a drink that contains ethanol, a type of alcohol produced by fermentation of grains, fruits, or other sources of sugar.

New!!: Grey matter and Alcoholic drink · See more »


The amygdala (plural: amygdalae; also corpus amygdaloideum; Latin from Greek, ἀμυγδαλή, amygdalē, 'Almond', 'tonsil') is one of two almond-shaped groups of nuclei located deep and medially within the temporal lobes of the brain in complex vertebrates, including humans.

New!!: Grey matter and Amygdala · See more »

Anterior grey column

The anterior grey column (also called the anterior cornu, anterior horn of spinal cord or ventral horn) is the front column of grey matter in the spinal cord.

New!!: Grey matter and Anterior grey column · See more »


Astrocytes (Astro from Greek astron.

New!!: Grey matter and Astrocyte · See more »


An axon (from Greek ἄξων áxōn, axis) or nerve fiber, is a long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses known as action potentials, away from the nerve cell body.

New!!: Grey matter and Axon · See more »

Basal ganglia

The basal ganglia (or basal nuclei) is a group of subcortical nuclei, of varied origin, in the brains of vertebrates including humans, which are situated at the base of the forebrain.

New!!: Grey matter and Basal ganglia · See more »


The brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.

New!!: Grey matter and Brain · See more »


The brainstem (or brain stem) is the posterior part of the brain, adjoining and structurally continuous with the spinal cord.

New!!: Grey matter and Brainstem · See more »


Cannabis is a genus of flowering plants in the family Cannabaceae.

New!!: Grey matter and Cannabis · See more »


A capillary is a small blood vessel from 5 to 10 micrometres (µm) in diameter, and having a wall one endothelial cell thick.

New!!: Grey matter and Capillary · See more »

Central nervous system

The central nervous system (CNS) is the part of the nervous system consisting of the brain and spinal cord.

New!!: Grey matter and Central nervous system · See more »


The cerebellum (Latin for "little brain") is a major feature of the hindbrain of all vertebrates.

New!!: Grey matter and Cerebellum · See more »

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.

New!!: Grey matter and Cerebral cortex · See more »

Cerebral hemisphere

The vertebrate cerebrum (brain) is formed by two cerebral hemispheres that are separated by a groove, the longitudinal fissure.

New!!: Grey matter and Cerebral hemisphere · See more »

Classical Latin

Classical Latin is the modern term used to describe the form of the Latin language recognized as standard by writers of the late Roman Republic and the Roman Empire.

New!!: Grey matter and Classical Latin · See more »

Cranial nerve nucleus

A cranial nerve nucleus is a collection of neurons (gray matter) in the brain stem that is associated with one or more cranial nerves.

New!!: Grey matter and Cranial nerve nucleus · See more »


Dendrites (from Greek δένδρον déndron, "tree"), also dendrons, are branched protoplasmic extensions of a nerve cell that propagate the electrochemical stimulation received from other neural cells to the cell body, or soma, of the neuron from which the dendrites project.

New!!: Grey matter and Dendrite · See more »

Dentate nucleus

The dentate nucleus is a cluster of neurons, or nerve cells, in the central nervous system that has a dentate – tooth-like or serrated – edge.

New!!: Grey matter and Dentate nucleus · See more »

Dorsal column–medial lemniscus pathway

The dorsal column–medial lemniscus pathway (DCML) (also known as the posterior column-medial lemniscus pathway (PCML)) is a sensory pathway of the central nervous system that conveys sensations of fine touch, vibration, two-point discrimination, and proprioception (position) from the skin and joints.

New!!: Grey matter and Dorsal column–medial lemniscus pathway · See more »

Emboliform nucleus

The emboliform nucleus (or anterior interposed nucleus) is a deep cerebellar nucleus that lies immediately to the medial side of the nucleus dentatus, and partly covering its hilum.

New!!: Grey matter and Emboliform nucleus · See more »

Fastigial nucleus

The fastigial nucleus is located in the cerebellum.

New!!: Grey matter and Fastigial nucleus · See more »

French language

French (le français or la langue française) is a Romance language of the Indo-European family.

New!!: Grey matter and French language · See more »

Globose nucleus

The globose nucleus is one of the deep cerebellar nuclei.

New!!: Grey matter and Globose nucleus · See more »

Globus pallidus

The globus pallidus (Latin for "pale globe") also known as paleostriatum or dorsal pallidum, is a subcortical structure of the brain.

New!!: Grey matter and Globus pallidus · See more »

Gray matter heterotopia

MRI of a child experiencing seizures. There are small foci of grey matter heterotopia in the corpus callosum, deep to the dysplastic cortex (double arrows)Gray matter heterotopia (singular heterotopion) is a neurological disorder caused by clumps of grey matter (ectopic nodules of neurons) located in the wrong part of the brain.

New!!: Grey matter and Gray matter heterotopia · See more »

Grey column

The grey column refers to a somewhat ridge-shaped mass of grey matter in the spinal cord.

New!!: Grey matter and Grey column · See more »

Grey commissure

The grey commissure is a thin strip of grey matter that surrounds the central canal of the spinal cord and, along with the anterior white commissure, connects the two halves of the cord.

New!!: Grey matter and Grey commissure · See more »


The hippocampus (named after its resemblance to the seahorse, from the Greek ἱππόκαμπος, "seahorse" from ἵππος hippos, "horse" and κάμπος kampos, "sea monster") is a major component of the brains of humans and other vertebrates.

New!!: Grey matter and Hippocampus · See more »

HPS stain

In histology, the HPS stain, or hematoxylin phloxine saffron stain, is a way of marking tissues.

New!!: Grey matter and HPS stain · See more »


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.

New!!: Grey matter and Hypothalamus · See more »


An interneuron (also called internuncial neuron, relay neuron, association neuron, connector neuron, intermediate neuron or local circuit neuron) is a broad class of neurons found in the human body.

New!!: Grey matter and Interneuron · See more »

Lateral grey column

The lateral grey column (lateral column, lateral cornu, lateral horn of spinal cord, intermediolateral column) is one of the three grey columns of the spinal cord (which give the shape of a butterfly); the others being the anterior and posterior grey columns.

New!!: Grey matter and Lateral grey column · See more »


A micrograph or photomicrograph is a photograph or digital image taken through a microscope or similar device to show a magnified image of an item.

New!!: Grey matter and Micrograph · See more »

Motor neuron

A motor neuron (or motoneuron) is a neuron whose cell body is located in the motor cortex, brainstem or the spinal cord, and whose axon (fiber) projects to the spinal cord or outside of the spinal cord to directly or indirectly control effector organs, mainly muscles and glands.

New!!: Grey matter and Motor neuron · See more »


Myelin is a lipid-rich substance that surrounds the axon of some nerve cells, forming an electrically insulating layer.

New!!: Grey matter and Myelin · See more »


Neuroglia, also called glial cells or simply glia, are non-neuronal cells in the central nervous system (brain and spinal cord) and the peripheral nervous system.

New!!: Grey matter and Neuroglia · See more »


A neuron, also known as a neurone (British spelling) and nerve cell, is an electrically excitable cell that receives, processes, and transmits information through electrical and chemical signals.

New!!: Grey matter and Neuron · See more »


Neuropil (or "neuropile") is any area in the nervous system composed of mostly unmyelinated axons, dendrites and glial cell processes that forms a synaptically dense region containing a relatively low number of cell bodies.

New!!: Grey matter and Neuropil · See more »

Nucleus accumbens

The nucleus accumbens (NAc or NAcc), also known as the accumbens nucleus, or formerly as the nucleus accumbens septi (Latin for nucleus adjacent to the septum) is a region in the basal forebrain rostral to the preoptic area of the hypothalamus.

New!!: Grey matter and Nucleus accumbens · See more »


Oligodendrocytes, or oligodendroglia,.

New!!: Grey matter and Oligodendrocyte · See more »

Olivary body

In anatomy, the olivary bodies or simply olives (Latin oliva and olivae, singular and plural, respectively) are a pair of prominent oval structures in the medulla oblongata, the lower portion of the brainstem.

New!!: Grey matter and Olivary body · See more »

Posterior grey column

The posterior grey column (posterior cornu, dorsal horn, spinal dorsal horn posterior horn) of the spinal cord is one of the three grey columns of the spinal cord.

New!!: Grey matter and Posterior grey column · See more »

Prefrontal cortex

In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe.

New!!: Grey matter and Prefrontal cortex · See more »

Projection fiber

The projection fibers consist of efferent and afferent fibers uniting the cortex with the lower parts of the brain and with the spinal cord.

New!!: Grey matter and Projection fiber · See more »


Proprioception, from Latin proprius, meaning "one's own", "individual", and capio, capere, to take or grasp, is the sense of the relative position of one's own parts of the body and strength of effort being employed in movement.

New!!: Grey matter and Proprioception · See more »


The putamen is a round structure located at the base of the forebrain (telencephalon).

New!!: Grey matter and Putamen · See more »

Pyramidal tracts

The pyramidal tracts include both the corticobulbar tract and the corticospinal tract.

New!!: Grey matter and Pyramidal tracts · See more »

Red nucleus

The red nucleus or nucleus ruber is a structure in the rostral midbrain involved in motor coordination.

New!!: Grey matter and Red nucleus · See more »

Rexed laminae

The Rexed laminae comprise a system of ten layers of grey matter (I-X), identified in the early 1950s by Bror Rexed to label portions of the grey columns of the spinal cord.

New!!: Grey matter and Rexed laminae · See more »

Sensory neuron

Sensory neurons also known as afferent neurons are neurons that convert a specific type of stimulus, via their receptors, into action potentials or graded potentials.

New!!: Grey matter and Sensory neuron · See more »

Septal nuclei

The septal nuclei (medial olfactory area) are a set of structures that lie below the rostrum of the corpus callosum, anterior to the lamina terminalis (the layer of gray matter in the brain connecting the optic chiasma and the anterior commissure where the latter becomes continuous with the rostral lamina).

New!!: Grey matter and Septal nuclei · See more »

Soma (biology)

The soma (pl. somata or somas), perikaryon (pl. perikarya), neurocyton, or cell body is the bulbous, non-process portion of a neuron or other brain cell type, containing the cell nucleus.

New!!: Grey matter and Soma (biology) · See more »

Somatosensory system

The somatosensory system is a part of the sensory nervous system.

New!!: Grey matter and Somatosensory system · See more »

Spinal cord

The spinal cord is a long, thin, tubular bundle of nervous tissue and support cells that extends from the medulla oblongata in the brainstem to the lumbar region of the vertebral column.

New!!: Grey matter and Spinal cord · See more »

Spinal interneuron

A spinal interneuron, found in the spinal cord, relays signals between (afferent) sensory neurons, and (efferent) motor neurons.

New!!: Grey matter and Spinal interneuron · See more »

Spinothalamic tract

The spinothalamic tract (also known as anterolateral system or the ventrolateral system) is a sensory pathway from the skin to the thalamus.

New!!: Grey matter and Spinothalamic tract · See more »

Substantia nigra

The substantia nigra (SN) is a basal ganglia structure located in the midbrain that plays an important role in reward and movement.

New!!: Grey matter and Substantia nigra · See more »


The subthalamus or prethalamus is a part of the diencephalon.

New!!: Grey matter and Subthalamus · See more »


In the nervous system, a synapse is a structure that permits a neuron (or nerve cell) to pass an electrical or chemical signal to another neuron or to the target efferent cell.

New!!: Grey matter and Synapse · See more »

Temporal lobe

The temporal lobe is one of the four major lobes of the cerebral cortex in the brain of mammals.

New!!: Grey matter and Temporal lobe · See more »

Terminologia Anatomica

Terminologia Anatomica (TA) is the international standard on human anatomic terminology.

New!!: Grey matter and Terminologia Anatomica · See more »


The thalamus (from Greek θάλαμος, "chamber") is the large mass of gray matter in the dorsal part of the diencephalon of the brain with several functions such as relaying of sensory signals, including motor signals, to the cerebral cortex, and the regulation of consciousness, sleep, and alertness.

New!!: Grey matter and Thalamus · See more »


In the vertebrate spinal column, each vertebra is an irregular bone with a complex structure composed of bone and some hyaline cartilage, the proportions of which vary according to the segment of the backbone and the species of vertebrate.

New!!: Grey matter and Vertebra · See more »


Vibration is a mechanical phenomenon whereby oscillations occur about an equilibrium point.

New!!: Grey matter and Vibration · See more »

White matter

White matter refers to areas of the central nervous system (CNS) that are mainly made up of myelinated axons, also called tracts.

New!!: Grey matter and White matter · See more »

Redirects here:

Gray Matter, Gray matter, Gray substance, Grey Matter, Grey substance, Substantia cana, Substantia cinerea, Substantia grisea, Sunstantia cinerea.


[1] https://en.wikipedia.org/wiki/Grey_matter

Hey! We are on Facebook now! »