msyamp
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5
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| reet
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yes ans 5) 3 Na out fr evry 2 K in 
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| reet
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during repolarisation ???
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| mildus
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I think it doesn't matter, Na K pump always does the same (i.e. 3 Na out, 2 K in), it is only the question of its activity (after repolarisation, it works more intensly because action potentials have affected Na and K concentrations, so they have to be restored to normal values).
The pump is called elecrogenic due to one neto catione transfered outside of the cell (3 Na+ out - 2 K+ in = 1 cation out)
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| drsnq
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good explanation mildus
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| alirizvi
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when did nbme start asking Qs like this ??
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