Okay, maybe that's not exactly how it happens, but I like it!
What really goes down is this:
Action potential travels down to the presynaptic terminal. This opens the calcium ion channel. The calcium ions enter the presynaptic terminal and cause the acetylcholines to move out into the presynaptic cleft. In the cleft the acetylcoline molecules attach themselves to either side of a sodium ion channel and let all the sodium ions into the postsynaptic muscle fiber. This allows for movement. After the sodium ions have left acetylcholinsterase splits the acetylcholine into choline and acetyc acid. The choline molecule returns to the presynaptic terminal alone and bonds with another acetyc acid inside the terminal to start the process all over again. Pretty cool, huh?
Now, to give credit where credit is due! I drew the little people and Megan Crawford drew all the bad guys. Then, Jenna and Seth helped us color. Yay the magic of teamwork!
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