NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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Read the following statements and select the most appropriate option.
(a) Nodal tissue present in the right upper corner of the right atrium is called AV node.
(b) The nodal musculature is autoexcitable.
(c) The AVN is responsible for initiating and maintaining the rhythmic contractile activity of the heart.

View answer and explanation

Correct option: D

Only statement (b) is true

Option D (Only statement (b) is true) is correct because the nodal musculature is indeed autoexcitable, while the AV node is not in the right upper corner and does not initiate the rhythmic contractile activity.

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