If Na⁺ channels open and sodium ions diffuse into the cell, A) the cell will become hyperpolarized. B) other sodium ions will move out of the cell. C) voltage-gated channels will remain closed. D) the inside of the cell will become less negative. E) action potentials will be triggered.

Question

Quizplus · Accepted Answer

The influx of positively charged sodium ions into the cell would make the inside of the cell less negative, which is depolarization rather than hyperpolarization. The opening of Na⁺ channels will not affect other sodium ions that are already inside or outside the cell. Voltage-gated channels are not affected by the opening of these channels. However, if the depolarization reaches the threshold, voltage-gated channels will open, triggering an action potential.

If Na+ Channels Open and Sodium Ions Diffuse into the Cell

If Na⁺ Channels Open and Sodium Ions Diffuse into the Cell