yes, now when the acetylcholine receptors connect with the (ACh) it causes it to open and potassium escapes allowing a greater amount of sodium to enter, and the sodium makes depolarization and that causes more receptors to open and more sodium to enter and causes action potential
i can help you study muscle contraction
so axon get signals from my brain and that's what connect to my muscles and tell it to move?
how did you...?
don't worry about that. how does your muscle know when to move?your brain tells it to threw nerves, axon
close, these axon terminals are close but not touching and the space that is in between is a synaptic cleft.
and that's what make my muscles flex?
and the synaptic cleft has acetylcholine receptors witch capture the (ACh)
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the axon terminal is sending acetylcholine (ACh)
with action potential sodium can enter the muscle and will contract. when the muscle is ready to relax it spits out the sodium and susks in potassium