Given below are two statements: one is labeled Assertion(A) and other is labeled Reason(R).
Assertion (A) : Sarcomere gets shorten during muscle contraction.
Reason (R) : ‘Z’ line attached to the actins are pushed outwards during contraction.
In light of the above statements, choose the correct answer from the options given below.

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Both Assertion and Reason are true and Reason is correct explanation

Both Assertion and Reason are true, but Reason is not the correct explanation

Assertion is false, but Reason is true

Assertion is true, but Reason is false

answer is C.

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Detailed Solution

Assertion (A): "Sarcomere gets shortened during muscle contraction."

This statement is correct. The sarcomere, which is the basic contractile unit of a muscle, shortens during muscle contraction. This shortening occurs due to the sliding of actin and myosin filaments over each other.

Reason (R): "‘Z’ line attached to the actins are pushed outwards during contraction."

This statement is not accurate. During muscle contraction, the 'Z' lines (Z-discs) actually move closer together, not outwards. The sliding of actin and myosin filaments causes the sarcomere to contract, bringing the Z-discs closer.

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