Question

the white matter of the spinal cord is mainly
nodes of ranvier.
myelinated axons.
schwann cells.
neuroglia.
unmyelinated axons.
check answer

Explanation:

The white matter of the spinal cord is composed of myelinated axons. Myelin gives the white matter its characteristic color. Nodes of Ranvier are gaps in the myelin sheath. Schwann cells are involved in myelination in the peripheral nervous system. Neuroglia are supporting cells. Unmyelinated axons do not contribute to the white - matter appearance.

Answer:

myelinated axons.