Which type of neuroglia is found outside of the brain?

• A. Oligodendrocytes
• B. Schwann cells
• C. Microglia
• D. Astrocytes

Answer: (B)

Verified step by step guidance

1. Understand the role of neuroglia: Neuroglia are supportive cells in the nervous system that assist neurons in their function. Different types of neuroglia are found in different parts of the nervous system.
2. Differentiate between the central and peripheral nervous systems: The central nervous system (CNS) includes the brain and spinal cord, while the peripheral nervous system (PNS) includes all the nerves outside the CNS.
3. Identify the neuroglia specific to the CNS: Oligodendrocytes, astrocytes, and microglia are types of neuroglia found exclusively in the CNS. Oligodendrocytes produce myelin in the CNS, astrocytes provide structural and metabolic support, and microglia act as immune cells.
4. Identify the neuroglia specific to the PNS: Schwann cells are the neuroglia found in the PNS. They are responsible for producing the myelin sheath around peripheral nerves, aiding in the rapid transmission of nerve impulses.
5. Conclude that Schwann cells are the correct answer because they are the only type of neuroglia found outside the brain, specifically in the peripheral nervous system.