NEET Biology question

I. Atrioventricular valves II. Semilunar valves III. Right atrium IV. Right ventricle V. SAN The correct pathway of flow of blood (RBCs) from the options given below is

(A)V→III→I→IV→IICorrect
(B)V→III→I→II→IV
(C)V→III→IV→I→II
(D)I→II→III→IV→V

Answer: (A)

Solution

The SA node (V) initiates the heartbeat in the wall of the right atrium (III), which contracts and pushes blood through the open atrioventricular valves (I) into the right ventricle (IV), which in turn contracts and

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Question ID VK-116158