Nicole asked:


I need to find pictures of the 6 steps/events in muscle contraction. If you can explain what I should draw for each one that is fine but if you can give me a site that would show me pictures that would be great. Please.. help I need this for tomorrow.
Here’s the six steps

1. Motor neuron releases neutotransmitter actetylcholine into Neuromuscular
2.actetylcholine(ACh) causes impulse –> calcuim released within fiber
3. Myosin head binds actin forming cross bridge
4.ATP allows myosin croosbridge to change shape so that myosin pulls actin filament, sliding toward center of sacromere
5. Cross bridge is broken and myosin binds to actin so cycle can be repeated
6.Contraction ends when ACh is not released, enzymes break down remaining ACh, CAa+ is pumped back into cell and crossbridge stop forming
I finished but none of these answers helped but thanks anyway
I finished but none of these answers helped but thanks anyway

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