Read the content and answer the following....
axons of most of the neurons are repeatedly encircled by myelin,a membran containing lipid.this is called myelin sheath.they provide nutriens and and oxygen to the axon, accelerate impulses,act as an electric insulator and protect the axon fron external shock.
a) define myelin sheath.
b) list out the function of myelin sheath..
Answers
Answer:
HERE IS YOUR ANSWER BUDDY!.....
Explanation:
(a)myelin sheath:
The insulating covering that surrounds an axon with multiple spiral layers of myelin, that is discontinuous at the nodes of Ranvier, and that increases the speed at which a nerve impulse can travel along an axon
— called also medullary sheath
(b)function of myelin sheath
*The myelin sheath is a protective covering that surrounds fibres called axons, the long thin projections that extend from the main body of a nerve cell or neuron. This sheath is composed of protein and lipids.
*The main function of myelin is to protect and insulate these axons and enhance their transmission of electrical impulses. If myelin is damaged, the transmission of these impulses is slowed down, which is seen in severe neurological conditions such as multiple sclerosis.
Answer:
Ok let me help you to clear out this problem!!!
Myelin Sheath is the covering that surrounds the axon with multiple spiral layers of myelin.
Functions of Myelin Sheath:
* It protect the nerve from other electrical impulses.
* It increases the speed of the time taken for a nerve to traverse an axon...
Explanation:
Hope this answer helps u ......
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