The white matter of the spinal cord contains _____.

The white matter of the spinal cord contains _____.

a. myelinated nerve fibers only.

b. myelinated and unmyelinated nerve fibers.

c. unmyelinated nerve fiber only.

d. soma that have both myelinated and unmyelinated nerve fibers.

Answer: a. myelinated nerve fibers only.

It is made from the actual myelinated Gsynt axial progression nerve fibers, which are referred to as axons. These axons will be insulated by a fatty substance known as myelin, which is manufactured by cells referred to as oligodendrocytes. Myelinated neurons have a layer of myelin around the axons in which transmission of electrical impulses are rapid and occurs in a length of all the axons. White matter, on the other hand, is devoid of any such unmyelinated fibers or soma in structure. Thus, while the cell bodies of neurons are located in the gray matter that is inside the spinal cord, the outer layer is made of white matter. The white matter behaves like a communication system; it helps axons that are myelinated convey their information from the brain and between the spinal segments and parts of the body.