Nervous system/overview of neurons/Channels/diffusion of ions/K+ channel and membrane potential

POINT!

When the potassium (K+) channel is open, intracellular potential becomes negative.

narrated animation

When the potassium channel opens and potassium ions diffuse OUT of the cell, the intracellular potential becomes negative, because the potassium ions are electrically positive.

Challenge Quiz

1.

When the potassium (K⁺) channel is open, intracellular membrane potential becomes negative positive  正解!.