What is the functional unit of contraction in a myofibril?

What is the functional unit of contraction in a myofibril?
  1. The "H" zone
  2. The "M" line
  3. The "A" band
  4. The sarcomere

Solution

The portion of the myofibril between two successive "Z" lines is considered as the functional unit of contraction and is called a sarcomere.

Asked in: NCERT

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