Multiple choice

Myelin sheath is derived from

  1. neuroglial cells

  2. Schwann cells

  3. nerve cells

  4. All of these

  5. -

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A Schwann cell wraps around the axon many times, forming a spiral of membrane. The myelin sheath serves as an insulator for individual axons, allows the signals to move faster along the axon and can help in the repair of a damaged axon.