Question

masses of myelinated nerve fibers appear ______. multiple choice white gray brown transparent

Explanation:

In the nervous system, myelinated nerve fibers are covered by myelin sheaths (composed mainly of lipids). These myelin - rich structures give the masses of myelinated nerve fibers a white appearance. Gray matter in the nervous system is mainly composed of neuron cell bodies and unmyelinated fibers, brown and transparent are not the typical colors associated with masses of myelinated nerve fibers.

Answer:

white (the option corresponding to "white")