Action Potentials

ACTION POTENTIALS

Stimulus - 

This excited then neurone which makes the Na+ ion channels open -> membrane becomes more permeable so they diffuse in down their electrochemical gradient. {Now its less negative inside the membrane} (-70mv).

Depolarisation - 

Of the threshold is reached the voltage gates Na+ ion channels will open allowing more Na+ ions in -> known as positive feedback (-55mv).

Repolarisation -

At -30mv the…