The white matter of the spinal cord contains ________.
A) myelinated nerve fibers only
B) myelinated and unmyelinated nerve fibers
C) unmyelinated nerve fibers only
D) cell bodies

Question

Quizplus · Accepted Answer

The white matter of the spinal cord contains both myelinated and unmyelinated nerve fibers. This is because the white matter is composed of axons (nerve fibers) that transmit information up and down the spinal cord. These axons can be either myelinated (covered in a fatty sheath that speeds up nerve impulse transmission) or unmyelinated. The cell bodies (soma) of neurons are found in the gray matter of the spinal cord, not the white matter.

The White Matter of the Spinal Cord Contains ________