Nervous system/overview of neurons/Channels/membrane potential/effect on diffusion

POINT!

The electric force of the negative intracellular membrane potential moves potassium (K+) from outside to inside of the cell.

narrated animation

When the potassium channels open and potassium ions diffuse OUT of the cell, the intracellular potential becomes negative. Because of this negative potential, part of the diffused ions are pulled back into the cell.

Challenge Quiz

1.

The electric force of the negative intracellular membrane potential moves potassium (K⁺) from outside to inside from inside to outside  正解! of the cell.

2.

When the potassium (K⁺) channel is open, the diffusion continues until there is no difference in concentration between inside and outside the cell. true false  正解!