PATHOLOGY MCQ
NERVOUS SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
This is the protective covering over the axon of a neuron that helps to increase the speed an impulse (message) is transmitted (sent)
|
|
synapse
|
|
|
dendrites
|
|
|
cell body
|
|
|
Myelin sheath
|
Explanation:
Detailed explanation-1: -The myelin sheath is a protective membrane that wraps around part of certain nerve cells. Myelin also affects how fast signals travel through those nerve cells.
Detailed explanation-2: -Myelin can greatly increase the speed of electrical impulses in neurons because it insulates the axon and assembles voltage-gated sodium channel clusters at discrete nodes along its length.
Detailed explanation-3: -The myelin sheath is a protective covering that surrounds fibers called axons, which are the long thin projections that extend from the main body of a nerve cell or neuron. This sheath is composed of protein and lipids.
There is 1 question to complete.