The explanation I’ve heard is that we can move because our muscles expand and contract. But then I don’t know how they do that. It feels to me like the answer I hear about how I can move is “smaller things that you are made from move and it makes you move”. I would like to understand on a fundamental level how this process works. I want to know what the smallest component of that process does that results in me being able to do something like type on a keyboard. Thanks.
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Muscles work based off very small electrical signals from the brain…To put it as simply as I can it’s a little bit like a very tiny version of an automatic door at a grocery store…
A signal is recieved (from the brain in the case of a person or the proximity scanner of the door) then a current is run into a small device of some kind (muscle fibers in a person or the electric motor in the door mechanism) and the device either contracts (tightens) or expands (relaxes) depending on the signal that is recieved…
Living creatures brains are remarkably efficient at this sort of communication within its own body…
That’s sort of the short and dirty of how muscles in general work…
Hopefully that makes some sense…
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