The resting membrane potential is maintained because

Question

Quizplus · Accepted Answer

The resting membrane potential is maintained because there is a higher concentration of sodium ions outside the cell and a higher concentration of potassium ions inside the cell. The membrane is selectively permeable, allowing potassium ions to cross easily while sodium ions cannot. The sodium-potassium pump also plays a role in maintaining this concentration gradient by actively transporting sodium out of the cell and potassium into the cell. Therefore, choice B is correct because sodium ions cannot cross to the inside of the cell membrane.

The Resting Membrane Potential Is Maintained Because