Q:

Which term is given to the unit of a myofibril that contracts

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Which term is given to the unit of a myofibril that contracts?


  1. sarcoplasm
  2. sarcomere
  3. sarcolemma
  4. sarcoplasmic reticulum

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B: The contraction of a myofi bril is due to the shortening of its component sarcomeres.

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