Which of the following is true of Schwann cells?
A) Schwann cells provide myelin for peripheral nerve cells.
B) Schwann cells are found within the brain.
C) A single Schwann cell wraps multiple segments around a peripheral nerve cell.
D) A single Schwann cell can myelinate up to 50 segments of axon membrane.
E) Schwann cells remove the cellular debris left by dead neurons in brain.

Question

Quizplus · Accepted Answer

Schwann cells provide myelin for peripheral nerve cells. They wrap around a segment of axon, forming a myelin sheath that insulates the axon and increases the speed of nerve impulse conduction. Schwann cells are found in the peripheral nervous system, not the brain. Each Schwann cell wraps around a single segment of axon, not multiple segments. Finally, Schwann cells do not remove cellular debris left by dead neurons in the brain; this is the job of microglia.

Which of the Following Is True of Schwann Cells