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Movement of Ca²⁺ out in sarcoplasmic reticulum after contraction stops the interaction of actin and myosin complex actomyosin due to which muscle contraction and relaxation takes place. Albert Szent Gyorgyi worked out biochemical events of muscle contraction.

1. Movement of Ca²⁺ out in sarcoplasmic reticulum after contraction stops the interaction of actin and myosin complex actomyosin.
2. Due to which muscle contraction and relaxation takes place.
3. Albert Szent Gyorgyi worked out biochemical events of muscle contraction.
4. All of the above.

Correct answer: Movement of Ca²⁺ out in sarcoplasmic reticulum after contraction stops the interaction of actin and myosin complex actomyosin.

Solution

The removal of Ca²⁺ ions from the sarcoplasmic reticulum is crucial for muscle relaxation.

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