nervous system

Human Anatomy, Physiology, and Medicine. Anything human!

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chetanladdha
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nervous system

Post by chetanladdha » Fri Nov 18, 2005 12:23 pm

can anybody plss tell me any link or description of how an electric impulse is transferred thru an neuron..

thanx in advance.....

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Post by nabizko » Thu Nov 24, 2005 9:01 am

Basically the electirical impulse that is transferred through a neuron is done by generating and then propagating action potentials. Once stimulated and generated, an action potential is propagated through the depolarization of adjacent membrane areas, caused by the local current made by the original action potential. This leads to a movement away from the origin and toward the target site.

The change in membrane potential that leads to the generation of an action potential is due to the opening and closing of sodium and potassium specific ligand gated ion channels on the plasma membrane of the axon.

hope this helps.. I am kinda rusty at my AnP..
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MrMistery
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Post by MrMistery » Thu Nov 24, 2005 7:16 pm

Also note the jumping propagation in neurons with a myelin sheath as oposed to Herman's local curents in axons without
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Post by FiFiChan » Mon Nov 28, 2005 9:39 pm

A neurons with a myelin steath will transfer nerve impulse faster

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MrMistery
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Post by MrMistery » Tue Nov 29, 2005 8:04 pm

yes, aproximately 50 times faster... Give or take...
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Dr.Stein
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Post by Dr.Stein » Thu Dec 08, 2005 8:30 am

Read this: Neuron Conduction

It is a nice page with figures, it gives you info you really need and some additional info that is important to know ;)
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MrMistery
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Post by MrMistery » Fri Dec 09, 2005 7:21 pm

More a biophisics presentation than a physiology one...
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