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Assertion :- In the contraction of muscl...

Assertion `:-` In the contraction of muscle myosin slide on actin filament.
Reason `:` Actin become constant & myosin shows rotational movement proved by sliding filament theory `:`

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Assertion :- When the muscle fibre contracts, sacromere length is reduced. Reason :- Sliding of myosin filament occurs due to rotational movement of myosin head.

Assertion :- When the muscle fibre contracts, sacromere length is reduced. Reason :- Sliding of myosin filament occurs due to rotational movement of myosin head.

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In resting stage, binding sites for myosin on actin filaments are masked by

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In resting stage, binding sites for myosin on actin filaments are masked by