What is the purpose of the "Z" line in a myofibril?

What is the purpose of the "Z" line in a myofibril?
  1. To contract the sarcomere
  2. To hold the thick filaments together
  3. To separate the sarcomeres
  4. To regulate the overlap of thin filaments on thick filaments

Solution

The "Z" line separates the sarcomeres in a myofibril.

Asked in: NCERT

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