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sarcomere

sarcomere

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Answer

  • Sarcomere is the structural and functional unit of skeletal muscle.
  • Sarcomere is made up of actin and myosin myofilaments that interacts with each other to allow muscle contraction.
  • Sarcomere shorterns during muscle contraction.



Components of sarcomere :


1) A band - It contains both thick and thin filaments

2) I band - It only contains thick filaments

3) Z-disc - It is attachment site for thin filaments

4) H zone - The central region of A band consisting of only thick filaments

5) M line - M line is the center of sarcomere and attachment site for thick filaments

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