Question

multiple choice question
identify the neuroglial cell indicated by the arrow.
oligodendrocyte
ependymal cell
astrocyte
schwann cell

Explanation:

• Oligodendrocytes: Produce myelin in the central nervous system (CNS).
• Ependymal cells: Line the ventricles of the brain and central canal of the spinal cord, produce cerebrospinal fluid.
• Astrocytes: Have numerous functions including supporting neurons, regulating the blood - brain barrier, and recycling neurotransmitters.
• Schwann cells: Produce myelin in the peripheral nervous system (PNS).

Assuming the arrow is pointing to a cell that is myelinating axons in the PNS (as Schwann cells myelinate single axons in the PNS), while oligodendrocytes myelinate multiple axons in the CNS. If the image is of the PNS (based on typical textbook illustrations where Schwann cells are shown myelinating peripheral axons), Schwann cell is the answer.

Answer:

Schwann cell