Question

A second nerve impulse cannot be generated until ________. proteins have been resynthesized the na ions have been pumped back into the cell the membrane potential has been reestablished all sodium gates are closed

Answer 1

The answer is ‘the membrane potential has been reestablished’ Ths occurs by pumping out sodium ions from the inside of the cell. This process is called repolarization. During depolarization, as impulse is carried across the cell, sodium ions channels open and the sodium outside of the cell enters the cell.