What happens with muscle contraction?

I need a "dumbed down" explanation about muscle contraction and the steps that it takes...

like with calcium , channels, charge etc.....and acetylcholinesterase.....

plz help

1 Answer

  • Liron
    Lv 5
    7 years ago
    Favorite Answer

    Electrical current opens up Calcium Voltage Gates ; ACh attaches to the receptors and the channel opens and equals levels of sodium and potassium; electrical signal gets passed up the cell membrane and other channels open, Action potential, calcium binds to troponin and makes tropomyosin to move the myosine heads attach to the active sites, cross bridge; ATP attach to myosine head which causes a power stroke, meaning the myosine detach.

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