NEET PG DENTAL EXAM

EMBRYOLOGY

NERVOUS SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What does the Myelin Sheath protect?
A
Axon
B
Dendrite
C
Cell body
D
axon terminal
Explanation: 

Detailed explanation-1: -Its fatty-protein coating provides protective insulation for your nerve cell, like the plastic insulation covering that encases the wires of an electrical cord. It allows the electrical impulses to travel quickly and efficiently between one nerve cell and the next.

Detailed explanation-2: -The myelin sheath is a greatly extended and modified plasma membrane wrapped around the nerve axon in a spiral fashion [1]. The myelin membranes originate from and are a part of the Schwann cells in the peripheral nervous system (PNS) and the oligodendroglial cells in the central nervous system (CNS) (see Chap. 1).

Detailed explanation-3: -Most of the axons in the central nervous system are wrapped in myelin, a substance rich in lipids (fatty substances) and proteins. Like the coating around an electrical wire, myelin insulates and protects the axon and helps speed nerve transmission.

There is 1 question to complete.