When we have smooth muscle, when you stretch it, it responds by contracting. So a light input to the optic nerve will open up sodium or calcium channels,. And they rush in down their concentration gradient, stimulate an action potential. Same thing happens for a chemical signal. If acid burns my hand, the reason why I feel that is because the acid, the chemical actually opens up channels in my hand to send that signal. The chat- Change in one form to another. That's amazing.
In this episode, Dr Matt and Dr Mike discuss how the nervous system allows us to walk, talk, smell, taste, hear, and feel!
This episode is about the electrical and chemical signals that the body sends called action potentials!
For a video on this topic we suggest that you watch: Action Potentials
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