Masses of myelinated nerve fibers appear __________Blank.Multiple Choicebrownwhitetransparentgray

The masses of myelinated nerve fibers appear white. This is due to the presence of myelin, which is a fatty substance that surrounds the nerve fibers. Myelin acts as an insulator, allowing for faster transmission of electrical signals along the nerves. The high lipid content of myelin gives it a white appearance, which is why areas of the central nervous system that are rich in myelinated fibers, such as the white matter of the brain and spinal cord, are characterized by their light color. In contrast, unmyelinated nerve fibers, which lack this fatty sheath, appear gray and are found in the gray matter of the brain and spinal cord.