Question

CNCORA 6 of 10 > Action potentials in neurons involve opening and closing of voltage-gated Nat and K ion channels. Place the events of an action potential in order, starting and ending with a cell at its resting membrane potential. Resting state Return to resting state Answer Bank A graded potential brings the membrane to threshold potential. Fast Na+ and slow K* channels are activated. Nat rushes into the cell, causing membrane depolarization. K channels close slowly, resulting in hyperpolarization. Na channel gates reset. K rushes out of the cell, causing repolarization K channels fully open, and Na' channel inactivation gates close. ģ

Answer 1

Answer ; Following are the steps invloved in the process of cellular depolarizarion and repolarization. It is arranged in a actual form from a resting membrane potential to the return of the resting membrane potential. The steps invloved are taken from the given answer banks. Here the actual steps,

1. Na+ rushes into the cell, causing depolarisation.

2. A graded potential brings the membrane to the threshold potential

3. Fast Na+ and slow K+ channels are activated

4. K+ channels fully open and Na+ channel gates close

5. K+ channel rushing out of the cell causing repolarization.

7. K+ channel closes slowly , resulting in hyperpolarisation, Na+ channel gets resel.

Then the cells attain again the resting state, these process will go on continuosly accordiing to the prsence of electrolytes. These are the actual order of the process from the given options.