NERVOUS
NEURONS TYPES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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they convert chemical signals into electrical signals
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they receive information from neighboring neurons
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they convert electrical signals into chemical signals
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they quicken the speed at which nerve impulses travel
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Detailed explanation-1: -Myelin is an insulating layer, or sheath that forms around nerves, including those in the brain and spinal cord. It is made up of protein and fatty substances. This myelin sheath allows electrical impulses to transmit quickly and efficiently along the nerve cells. If myelin is damaged, these impulses slow down.
Detailed explanation-2: -Myelin allows for saltatory action potential (AP) conduction along axons. During this form of conduction, the AP travels passively along the myelin-covered part of the axon, and is recharged at the intermittent nodes of Ranvier. Thus, myelin can reduce the energy load needed and/or increase the speed of AP conduction.
Detailed explanation-3: -In myelinated neurons of mammals, nerve impulses can travel at a speed of 70-120 meters per second (m/s).