Arrange the following statements in the correct sequence of the movement of ions during the action potential

A. Na+ channels open, Na+ begins to enter cell

B. K+ continues to leave cell. causes membrane potential to return to resting level

C. K+ channels open, K+ begins to leave cell

D. K+ channels close. Na+ channels reset

E. Nat channels become refractory, no more Nat enters the cell

Choose the correct answer from the options given below:

1. AA, B, C, D, E
2. BA, C, E, B, D
3. CA, E, C, D, B
4. DD, E, A, C, B

Pick an option to check yourself, or open the answer below.

Show answer & explanation

Correct answer: B. A, C, E, B, D

Explanation

Action potential: Na+ channels open → K+ channels open → Na+ channels become refractory → K+ outflow repolarises → K+ channels close and Na+ channels reset.