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I am aware about some basics of Saltatory conduction of nerve impulses. I know that the nerve impulses(ionic flow and the depolarization) are transferred from the node to the node in myelinated nerve fibers instead in the non-myelinated fibers the ionic flow and the depolarization are repeated along the entire length. Thus the saltatory conduction is faster.

Also why is it so that the myelinated nerve fibers require less energy of activation then the non-myelinated ones?

My book says that due to rise in the temperature the conduction of nerve impulses accelerates . I would also like to know the reason for the same.

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Talking about the energy requirements, it requires less energy because only the nodes are depolarized and just a few ions are required to be pumped back, which is an energy requiring active transport mechanism (As the ion channels require energy to be operated). –  Shefali Jan 3 '14 at 7:58
Yes, completely agree with Shefali. –  biogirl Jan 3 '14 at 8:26
@Shefali and Biogirl lajja Well, I completely agree to both of you. But i also wish to get the answer to the second question. –  user3800 Jan 3 '14 at 13:42
Increasing the temperature, the ions would flow faster due to faster diffusion, and hence the jump of AP from one node to other would be faster than at lower temperature. –  Satwik Pasani Jan 3 '14 at 14:20
Increase in temperature is an increase in kinetic energy, which speeds up the process of diffusion (more kinetic energy means more collisions per unit time). –  Keegan Keplinger Jan 4 '14 at 15:27

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