Electrical wires are generally protected by a tube of plastic.A similar insulating function is performed in the nervous system by the:
A)myelin sheath.
B)glial cells.
C)terminal buttons.
D)synapse.

Question

Quizplus · Accepted Answer

The myelin sheath is a fatty covering that acts as an insulator for nerve fibers, protecting them from damage and helping to speed up the transmission of neural impulses. This is similar to how plastic protects electrical wires. Glial cells, terminal buttons, and synapses are all important components of the nervous system, but they do not perform the same insulating function as the myelin sheath.

Electrical Wires Are Generally Protected by a Tube of Plastic