NEET Biology question

During muscle contraction in humans, the

(A)Sarcomere does not shorten
(B)A band remains sameCorrect
(C)A, H and I bands shorten
(D)Actin filaments shorten in length

Answer: (B)

Solution

During contraction the actin and myosin filaments slide past each other via cross-bridges, reducing the length of the sarcomere; the I-band and H-zone

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Question ID VK-117138