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posterior part
Dulce Hickle
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∙ 12y agoneuroglianeuron cell bodies (somas)unmyelinated axonsThe gray horns contain all of these elements
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Afferent nerve fibers enter the part of the spinal cord called?
gray commissure
Important synapse site for afferent fibers traveling to the sensory cortex?
thalamus Also, the gray matter in the dorsal horn of the spinal cord.
A myelinated nerve fiber is characterized as being whereas an unmyelinated?
Myelinated nerves are white, and composes the white matter of the brain and spinal cord they also are able to pass an action potential down an axon much faster; Unmyelinated nerves are gray, and composes the gray matter of the brain and spinal cord. These nerves transmit signals much slower
Gray rami communicantes connect to what two structures?
White rami communicantes (sing. ramus communicans) are literally white branches of communication between each spinal nerve and the sympathetic trunk. Their color is white because these lines of communication contain mainly myelinated nerve fibers of pre-ganglionic general visceral efferents from the spinal cord. Many of the pre-ganglionic nerve fibers synapse at the corresponding spinal segment level, and thus build a sympathetic ganglion at that level. Other pre-ganglionic white fibers either ascend or descend in the sympathetic trunk before synapsing in sympathetic ganglia above or below the spinal segment of origin. The sympathetic ganglia are literally knots in the sympathetic cord primarily containing cell bodies of the post-ganglionic neurons, whose axons are unmyelinated and gray in color. These unmyelinated post-ganglionic nerve fibers rejoin the spinal nerve at that level via the gray rami communicantes,as well as ascending or descending to adjacent levels. The white rami may also contain lightly myelinated sympathetic afferents whose cell bodies in the dorsal root ganglia synapse in the dorsal horn gray of the spinal cord. ANSWER: Carry preganglionic axons to the sympathetic chain
Some of brain structures consist of gray or white matter what are they?
White matter is found in the inside of the brain and the spinal cord. Grey matter is found in most parts of the brain including the cerebellum and brain stem.
What are the outward projections from the central gray matter of the spinal cord called?
horns
What is the bridge of the gray matter connecting the right and left horns of the spinal cord?
Gray commissure
The projections of gray matter toward the outer surface of the spinal cord are called?
Horns
What is the name of the bridge of gray matter that connects the right and left horns of the spinal cord?
Gray commissure
What are the six projections from the gray matter seen in cross-sections of the spinal cord called?
horns
What is the Gray matter that resembles the upper wings of a butterfly in spinal cord cross section?
Posterior Horns.
Are motor neuron cells bodies located in the gray or white matter of the spinal cord?
the white matter
What is the medical term meaning diseases of the gray matter of the spinal cord?
Myelopathy is the medical term meaning disease of the gray matter of the spinal cord. Inflammation of the spinal cord is myelitis.
The gray matter of the spinal cord?
Is located within the spinal cord and contains unmyelinated fibers.
Where are the spinal reflex centers located?
In the gray matter of the spinal cord.
Is poliomyelitis a bacterial infection affecting the gray matter of the spinal cord?
Close - poliomyelitis is a viral infection affecting the gray matter of the spinal cord.
In the spinal cord which is deep to the other the white or gray matter?
in the spinal cord which is deeper to the other, the white matter or gray matter? how does this compare to the distrubution in the brain
