Question

multiple choice question
which of the following are neuroglia found in the peripheral nervous system?
astrocytes and microglia
schwann cells and satellite cells
satellite cells and ependyma cells
schwann cells and oligodendrocytes

Explanation:

• Astrocytes and microglia: These are neuroglia in the central nervous system (CNS), not the peripheral nervous system (PNS). Astrocytes have functions like regulating the chemical environment around neurons in the CNS, and microglia are the immune - cells of the CNS.
• Schwann cells and satellite cells: Schwann cells are responsible for myelinating axons in the PNS. Satellite cells surround neuron cell bodies in ganglia of the PNS, providing support and protection.
• Satellite cells and ependyma cells: Ependyma cells line the ventricles of the brain and the central canal of the spinal cord (CNS structures), so they are not in the PNS.
• Schwann cells and Oligodendrocytes: Oligodendrocytes are responsible for myelinating axons in the CNS, while Schwann cells do the same in the PNS. But since one of them (oligodendrocytes) is a CNS glial cell, this option is incorrect.

Answer:

Schwann cells and satellite cells