143muscle10 - • 4. Nerve stimulation -calcium released...

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10 Myofilaments • Excitation contraction coupling • Contraction requires neural stimulus and energy to be available • 1. Myosin cross bridge attached to actin • 2. ATP binds - cross-bridge detaches • 3. ATP hydrolyzed - energy release – myosin head moves to ready position – Resting state
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Unformatted text preview: • 4. Nerve stimulation -calcium released – actin and myosin filaments bind • 5. ADP and Pi released – power stroke – myosin fibers move actin complex – sarcomere compressed - muscle shortens • 6. Myosin cross bridge again attached to actin - awaiting ATP...
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This note was uploaded on 12/27/2011 for the course KIN 143 taught by Professor Asmundson during the Fall '09 term at Simon Fraser.

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