myba
Forum Newbie
Topics: 5
Posts: 18
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I don't understand this concept ... can anybody explain it please?
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| new_n_lost
Politically InCorrect
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Wht did u understand out of the Question Can u Plz Tells us that so we can understand wht part of the concept u didnt understand.
As a General Rule Potassium Flow Always results in its Initial Efflux when an AP is initiated Otherwise When Sodium and Ca Channels r open they dont go out of th ecell they go inside the cell. After the AP Na/K+ ATPase recorrects the Ion Concerntration of the Cell Across the Membrane.
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| myba
Forum Newbie
Topics: 5
Posts: 18
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Thanks new_n_lost for your reply. I've had a little more readings, and came down to this...
1) resting membrane pot = -70
2) K+ equilibrium pot = -80
3) so when channel is open, K+ tries to go out to make the cell more negative (thus closer to its own EP= -80)
I was confused with Cl- then which has similar EP, but seems that "it doesn't play an important role in membrane potential" for some reason. (UW explanation)
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| paganini
Forum Senior
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Posts: 159
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Equilibrium potential concept.
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| hisham
Forum Senior
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hi
why cl not act as K coz k follow its conc gradient as u know k high in conc inside cell whch is opposite in cl this s what called electrochemical equiliprium means not charge only but chemical conc also has effect ..hope i am right if am wrong plz tell me
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| tompat
Forum Elite
Topics: 36
Posts: 319
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yes hisham ur right.
to add to it i wud say chemical equilibrium plays a major role in any ions movement, followed by elecrical equilibrium, as electric potential can be influenced by diff ions with same electric charge.let me know is i m wrong
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