Question

question 4
the myelin sheath is made from ______.
axons
glial cells
somas
terminal buttons

Explanation:

The myelin sheath is a protective layer around nerve cell axons, produced by specialized support cells in the nervous system called glial cells (Schwann cells in the peripheral nervous system and oligodendrocytes in the central nervous system). Axons are the nerve fibers the sheath covers, somas are the cell bodies of neurons, and terminal buttons are the ends of axons that release neurotransmitters.

Answer:

glial cells