How is the resting potential restored after a nerve impulse?(a) Potassium ions diffuse inside the membrane(b) Potassium ions diffuse outside the membrane(c) The membrane becomes impermeable to potassium ions(d) There is no movement of potassium ionsI have been asked this question in an interview.My question comes from Neuron-2 in division Neural Control and Coordination of Biology – Class 11

How is the resting potential restored after a nerve impulse?(a) Potass

1.	How is the resting potential restored after a nerve impulse?(a) Potassium ions diffuse inside the membrane(b) Potassium ions diffuse outside the membrane(c) The membrane becomes impermeable to potassium ions(d) There is no movement of potassium ionsI have been asked this question in an interview.My question comes from Neuron-2 in division Neural Control and Coordination of Biology – Class 11
Answer» Correct choice is (b) Potassium IONS diffuse outside the membrane The BEST I can explain: After a nerve impulse, the permeability of the membrane to sodium ions reduces and INCREASES for potassium ions. Potassium ions diffuse outside the membrane and HENCE RESTORE the resting potential.

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