NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION

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Choose the correct statement about SA node
I. Located at lateral wall of the right atrium
II. Herat of heart
III. It initiates the rhythmic contractile activity of the heart and maintains it
IV. It is called pace keeper of the heart
V. It is called pace maker of the heart
The option with correct statements is

View answer and explanation

Correct option: B

All except IV

Option C (All except V) is correct because the SA node is the pacemaker, not the pace keeper, of the heart.

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