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NEET · Biology · STD 11 - 17. Locomotion and movement

Which of the following statements are correct regarding skeletal muscle? \(A\). Muscle bundles are held together by collagenous connective tissue layer called fascicle. \(B\). Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions. \(C\). Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins. \(D\). \(M\) line is considered as functional unit of contraction called sarcomere. Choose the most appropriate answer from the options given below:

  1. A \(C\) and \(D\) only
  2. B \(A,B\) and \(C\) only
  3. C \(B\) and \(C\) only
  4. D \(A,C\) and \(D\) only
Verified Solution

Answer & Solution

Correct Answer

(C) \(B\) and \(C\) only

Step-by-step Solution

Detailed explanation

Option (3) is the correct answer because statements \(B\) and \(C\) are only correct statements while \(A\) and \(D\) are incorrect statements. Muscle bundles are held together by collagenous connective tissue layer called fascia. Muscle bundles are called fascicles. The portion of the myofibril between two successive ' \(Z\) ' lines is considered as functional unit of contraction called sarcomere.