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Biology · PYQ NEET UG 2023
हिन्दीWhich of the following statements are correct regarding skeletal muscle?\nA. Muscle bundles are held together by collagenous connective tissue layer called fascicle.\nB. Sarcoplasmic reticulum of muscle fibre is a store house of calcium ions.\nC. Striated appearance of skeletal muscle fibre is due to distribution pattern of actin and myosin proteins.\nD. M line is considered as functional unit of contraction called sarcomere.\nChoose the most appropriate answer from the options given below:
Correct answer · Option 1
B and C only
Explanation
Fascicles contain muscle bundles held together by fascia (not fascicle itself). The functional unit of contraction is sarcomere (between two Z-lines, not M line). Thus statements B and C are correct.
