The primary function of the myelin sheath is to:
A) reduce the speed of neurotransmitters crossing the synaptic gap.
B) insulate the axon and increase the speed at which neurons convey their message.
C) provide support and nutrition to the dendrites.
D) inhibit the opening and closing of ion channels on the axon's membrane.

Question

Quizplus · Accepted Answer

The myelin sheath is formed by specialized cells called oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system. Its primary function is to insulate the axon and increase the speed at which neurons convey their message by allowing for faster propagation of action potentials.

The Primary Function of the Myelin Sheath Is To