Question

multiple choice question
which type of neuroglia provides insulating layers of myelin (myelin sheath) in the brain and spinal cord?
oligodendrocytes
astrocytes
ependymal cells
schwann cells

Explanation:

Oligodendrocytes form myelin sheaths in the central nervous system (brain and spinal cord). Astrocytes have roles in support and metabolism. Ependymal cells line ventricles and help with cerebro - spinal fluid. Schwann cells form myelin in the peripheral nervous system.

Answer:

A. Oligodendrocytes