Write down the biochemical events in the mechanism of muscle contraction?

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Solution

The following are the biochemical events in the mechanism of muscle contraction :
1. The active site on actin is exposed as Ca $^{+ +}$ binds troponin.
2. The myosin head forms a cross bridge with actin.
3. During the power stroke, the myosin head bends and ADP and phosphate are released.
4. A new molecule of ATP attaches to the myosin head, causing the cross bridge to detach.
5. ATP hydrolyzes to ADP and phosphate which returns the myosin to the cocked position.

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