Neuroglia · Histology

Which glial cell type surrounds and insulates peripheral nerve fibers?

  1. Schwann cells
  2. Astrocytes
  3. Oligodendrocytes
  4. Microglia
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Correct answer: Schwann cells

Schwann cells wrap around peripheral axons and form myelin sheaths. These sheaths increase the speed of electrical signal conduction.

Difficulty: Medium Question 18 of 20

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