Question

How muscles contract?

Answer 1

Answer:

When the brain sends the muscle a message to contract , little buds on each myosin filament twist sharply, pulling on action filaments and contracting.

Explanation:

In the muscle fibres , filaments of action and myosin interlock. When the brain sends the muscle a message to contract , little buds on each myosin filament twist sharply, pulling on action filaments and contracting.

Answer 2

Explanation:

Muscles movement is powered by a change in shape of the myosin . the myosin heads binds to action and breaks down ATP. this release energy that pulls the action filaments along.... the myosin heads tilt which pulls up the action and cause the muscles to contract.

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