Nerve cell is at resting potential with diffusion of Na+ & K+ down concentration gradient as cell pumps up the gradient
neurons recieve stimulation causing local potentials which may lead to reach threshold
sodium channels in trigger zone of axon opens
sodium ions diffuse inward, depolarizing the membrane
potassium channels in the membrane open
potassium ions diffuse outward, repolarizing the membrane
action potential causes electric current that stimulates adjacent portions of the membrane
action potentials occurs sequentially along the length of axon as nerve impulse
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.