What is gray matter mostly composed of?
Gray matter consists primarily of neuronal cell bodies, or soma. This a spherical structure that houses the neuron’s nucleus.
What structures of the brain are composed of gray matter?
Gray matter, named for its pinkish-gray color, is home to neural cell bodies, axon terminals, and dendrites, as well as all nerve synapses. This brain tissue is abundant in the cerebellum, cerebrum, and brain stem.
What is gray matter composed of quizlet?
Gray matter is neural tissue composed primarily of nerve cell bodies and unmyelinated fibers.
What is gray matter and white matter composed of?
Overview. The tissue called “gray matter” in the brain and spinal cord is also known as substantia grisea, and is made up of cell bodies. “White matter”, or substantia alba, is composed of nerve fibers.
What is the grey matter?
Grey matter (or gray matter) makes up the outermost layer of the brain and is pinkish grey in tone, hence the name grey matter. It gets its grey tone from the high concentration of neuronal cell bodies in contains. Grey matter also contains unmyelinated axons.
What is white matter composed of?
White matter is found in the deeper tissues of the brain (subcortical). It contains nerve fibers (axons), which are extensions of nerve cells (neurons). Many of these nerve fibers are surrounded by a type of sheath or covering called myelin. Myelin gives the white matter its color.
What’s grey matter in the brain?
The central nervous system is made up of tissue known as grey matter and white matter. Grey matter (or gray matter) makes up the outermost layer of the brain and is pinkish grey in tone, hence the name grey matter. It gets its grey tone from the high concentration of neuronal cell bodies in contains.
Does grey matter have myelin?
This increased surface area is crucial for effective functioning as more neurons can be present in contrast to a brain with a flat surface. Besides this group of neuronal cells, the axons of grey matter are not heavily myelinated, unlike white matter, which contains a high concentration of myelin.
What is gray matter quizlet?
Gray Matter. Consists of neuron cell bodies, unmyelinated axons, dendrites and neuroglia. Has 2 posterior horns, 2 anterior horns, gray commissure and central canal.
What main parts of neurons are found in gray matter quizlet?
-The gray matter, containing neuron cell bodies and dendrites, is found in the cortex (surface layer) of the brain and deeper within the brain in aggregations known as nuclei (superficial).
Which statement is true of grey matter?
The correct answer is (a): It makes up the outer tissue layer in the brain. Gray matter consists of cell bodies and unmyelinated neural processes,…
Whats is grey matter?