How the Body Works : A Nerve Impulse
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@avocadomilk recall that the membrane can only produce another action potential when it is at the resting portential. thus, during the refractory period right after the an action potential, the cell membrane cannot produce another action potential becuase it is hyperpolarized. so, a new action potential can only be triggered at the leading edge o the first polarized area.
got it from my text book.
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........ I didn't understand a WORD in that video!!
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realy hlpfl...
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straightforward~ thx
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-If you artificially stimulate an axon from the center, it WILL travel in both directions away from the artificial stimulation. It just depends on where the action potential propagates.
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Does anyone know how long it's takes for the Nerve to pump na+ out and suck k- in?
I'm guessing only a few mill-seconds but it's just so amazing I can't believe it
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Research the refractory period + synapses and you will find out.
Plus if you think, the receptor, or any other means of starting an impulse, will be at one end of the neurone so the impulse is just going to travel along the axon, rather than going half way and jus turning back :P
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Wow heaps good :D
thanks :D
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This video was helpfull :)
wooow im naked right now! w
andrew567567 3 years ago 6
what stops the impulses from traveling backwards?
avocadomilk 1 year ago 2