Biology question movement/nervous system?

  • Thread starter Thread starter Ray D
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Ray D

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We need help with this question! If you can't answer all the different parts, please answer one section of it! We've done so much research already, please no links.

You decide to move your finger. Clearly detail the steps involved. Start at the point where your brain sends a message to nerves that go to muscles of your finger. Include a discussion of how the nervous system controls muscle cell reactions as well as the sliding filament theory of contraction. What evidence supports the sliding filament model of contraction? How are a hypothesis and a model related.
 
do your own work!
ps. i know the answer but i cannot be bothered answering it...its too long.!

well i can give you about the sliding filament theory.

impulse at muscles causes an influx of calcium ions into the sarcomere, this causes tropomysosin to move from the actin filament, so exposing the binding site, for the myosin to form cross bridges, so the muscle fibre can contract.

thats quite enough!
 
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