CONNECTIVE TISSUE GLAND
ENDOCRINE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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length of axon
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number of neuroglia associated with it
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where the impulse originates from
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presence or absence of myelin
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Detailed explanation-1: -Axon diameter, internode distance, and myelin sheath thickness all influence the speed of action potential propagation. Moreover, these factors are to a certain degree correlated with each other.
Detailed explanation-2: -1 Answer. The two main factors are insulation by the myelin sheath and the diameter of the axon.
Detailed explanation-3: -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-4: -By acting as an electrical insulator, myelin greatly speeds up action potential conduction (Figure 3.14). For example, whereas unmyelinated axon conduction velocities range from about 0.5 to 10 m/s, myelinated axons can conduct at velocities up to 150 m/s.
Detailed explanation-5: -Myelination. We already know that myelinated neurones pass impulses using saltatory conduction, a much faster process compared to non-myelinated neurones. Axon Diameter. Temperature.