(III) During an action potential, Na+ ions move into the

Chapter 18, Problem 60P

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Problem 60P

(III) During an action potential, Na+ ions move into the cell at a rate of about 3X 10-7 mol/m2 .s. How much power must be produced by the “active Na+ pumping” system to produce this flow against a +30 -mV potential difference? Assume that the axon is 10 cm long and 20 mm in diameter.

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