Which of the following statements is correct | vedclass

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(B) According to the Sliding Filament Theory of muscle contraction:$1$. During contraction,the thin filaments slide over the thick filaments,which pul

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The length of the $A$-band remains constant.

Vedclass · Answer

(B) According to the Sliding Filament Theory of muscle contraction:$1$. During contraction,the thin filaments slide over the thick filaments,which pulls the $Z$-lines closer together,thereby shortening the sarcomere.$2$. The $A$-band (Anisotropic band) contains myosin filaments and its length remains constant throughout the contraction process.$3$. The $I$-band (Isotropic band) and the $H$-zone shorten as the actin filaments move deeper into the $A$-band.$4$. Therefore,the statement that the length of the $A$-band remains constant is correct.

Which of the following statements is correct regarding muscle contraction?

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