Q:

What is the effect of the movement of Na + into a nerve cell followed very soon by the movement of K + out of the nerve cell?

belongs to book: Examination Questions and Answers in Basic Anatomy and Physiology|Martin Caon|| Chapter number:14| Question number:15

waelhammad

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2022-10-19

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What is the effect of the movement of Na + into a nerve cell followed very soon by the movement of K + out of the nerve cell?

this establishes the resting membrane potential
these movements are known as depolarisation and repolarisation
these movements repolarise the cell
it changes the membrane potential from about −70 mV to about −50 mV

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waelhammad

2022-10-19

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B: When Na + moves into a nerve cell the cell depolarises (from −70 mV to about +30 mV) when soon afterwards K + moves out of the nerve cell, it repolarises (from +30 mV back to −70 mV).

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