Question

what is the primary component of white matter? a) capillary blood vessels b) myelinated axon fibers c) neuronal cell bodies d) unmyelinated axon fibers

Explanation:

White matter in the central nervous system is mainly composed of myelinated axon fibers. Myelin gives white matter its characteristic white appearance. Capillary blood vessels are not the main component. Neuronal cell bodies are more associated with gray matter. Unmyelinated axon fibers do not form the primary component of white matter.

Answer:

B. Myelinated axon fibers