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NEET UG BIOLOGY MCQ: STRUCTURAL ORGANISATION IN ANIMALS

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Understanding +4 | -1

Assertion (A): When one cell of cardiac muscle receives a signal to contract, its neighbour cells are also stimulated to contract.

Reason (R): There is presence of communicating junctions (intercalated discs) at some fusion points between muscle fibres.

In light of above statements, choose the correct option.

View answer and explanation

Correct option: A

Both (A) and (R) are true and (R) is the correct explanation of (A)

Option A (Both (A) and (R) are true and (R) is the correct explanation of (A)) is correct because intercalated discs facilitate rapid signal transmission in cardiac muscle.

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