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Gray matter in the spinal cord is mostly?
unmyelinated axons.
What connective tissue cover myelinated or unmyelinated axons?
The connective tissue that covers unmyelinated and myelinated axons is called endoneurium.
What type of conduction takes place in an unmyelinated axons?
Continuous conduction.
Do unmyelinated fibers transmit slowly?
Yes, myelinated axons are much more effective.
What can be defined as billions of neuroglial nerve cell bodies and unmyelinated axons?
gray matter
What is the portion of the spinal cord made up of cell bodies and unmyelinated axons?
Gray matter
What is gray matter made out of?
Neuronal cell bodies, neuropil (dendrites and both unmyelinated axons and myelinated axons), glial cells (astroglia and oligodendrocytes) and capillaries.
What is the relationship between the degree of myelination and and conduction velocity?
That myelinated axons fare faster, unmyelinated are slower.
Are the thalamic nuclei white or gray matter?
the thalamic nuclei is made of unmyelinated axons which are gray matter
What is meant when axon is described as myelinated?
Most axons are covered with a protective sheath of myelin, a substance made of fats and protein, which insulates the axon. Myelinated axons conduct neuronal signals faster than do unmyelinated axons.
Are unmyelinated axons in the cerebral cortex?
The cerebral cortex contains the bodies of neurons which appear grey (grey matter). The layer under the cortex contains myelinated axons (white matter).
Why do humans possess a mixture of axons some large diameter heavily myelinated axons and some small diameter relatively unmyelinated axons?
The mixture of axon types contributes to variety of responses generated. Specifically, the rate with which a response is made can vary.
