Explain the sarcomere, Biology

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For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomere. When the length of the sarcomere increases during a lengthening of the entire muscle,

A. The value of A remains constant.

B. The value of A plus the value of I (= A + I) remains constant.

C. The value of A minus the value of H (= A - H) decreases.

 


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