Question

in a resting state, sodium (na+) is at a higher concentration outside the cell and potassium (k+) is more concentrated inside the cell. during an action potential, the sodium levels ________ inside the cell. increase only if potassium levels remain the same stay the same decrease increase

Explanation:

During an action potential, voltage - gated sodium channels open, allowing sodium ions ($Na^+$) to flow into the cell down their concentration gradient. This leads to an increase in sodium levels inside the cell.

Answer:

increase