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Question

When the thick and the thin filaments pull together, which of the following is TRUE?


  1. The Z to Z line unit moves apart.

  2. The muscle loses tone.

  3. The sarcomere gets shorter.

  4. The myofibril doubles in size.


Solution

The correct option is C

The sarcomere gets shorter.


When the thick and thin filaments are pulled together ,sarcomere shortens and muscle contraction occurs.

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