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ZoologyNEET 2023Skeletal muscle and mechanism of contraction

Locomotion and Movement

Which of the following statements are correct regarding skeletal muscle?

A. Muscle bundles are held together by a collagenous connective tissue layer called the fascicle.

B. The sarcoplasmic reticulum of the muscle fibre is a store house of calcium ions.

C. The striated appearance of the skeletal muscle fibre is due to the distribution pattern of actin and myosin proteins.

D. The M line is considered the functional unit of contraction, called the sarcomere.

Choose the most appropriate answer from the options given below:

  1. A.A, B and C only
  2. B.B and C only✓
  3. C.A, C and D only
  4. D.C and D only

You have the answer. The worked solution — and why the other three were written — is part of a paid pack.

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