Assertion (A): During maximal muscle contraction, the H zone disappears but the A band width remains unchanged. Reason (R): The A band width equals the length of the myosin filament, which does not shorten during contraction.

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Biology · Human Physiology - Muscle Contraction

Assertion (A): During maximal muscle contraction, the H zone disappears but the A band width remains unchanged. Reason (R): The A band width equals the length of the myosin filament, which does not shorten during contraction.

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Answer 1

Both A and R are true, and R is the correct explanation of A

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Both A and R are true, but R is NOT the correct explanation of A

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Assertion (A): During maximal muscle contraction, the H zone disappears but the A band width remains unchanged. Reason (R): The A band width equals the length of the myosin filament, which does not shorten during contraction.

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Assertion (A): During maximal muscle contraction, the H zone disappears but the A band width remains unchanged. Reason (R): The A band width equals the length of the myosin filament, which does not shorten during contraction.

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