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Which statement is correct for muscle co...

Which statement is correct for muscle contraction?

A

Length of H-zone decrease

B

Length of A-band remains contant

C

Length of l-bond increases

D

Length of two Z-line increases

Text Solution

Verified by Experts

The correct Answer is:
B
When `Ca^(+)` ions combine with troponin then in conseqence muscle contraction will initiates.
During contraction, the Z-lines come closer together and the sarcomere becomes shorter. The length of A-band remains constant. I-bands shortens and H-zone narrwos.
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