What is the function of the "M" line in the "A" band of a myofibril?

What is the function of the "M" line in the "A" band of a myofibril?
  1. To contract the sarcomere
  2. To hold the thick filaments together
  3. To separate the "A" and "I" bands
  4. To regulate the overlap of thin filaments on thick filaments

Solution

The "M" line is a thin fibrous membrane that holds the thick filaments together in the middle of the "A" band.

Asked in: NCERT

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