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NEET UG BIOLOGY MCQ: BODY FLUIDS AND CIRCULATION
1
Medium
1 of 1
Understanding
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Which of the statement is correct?
I. The closing and opening of the heart is through the valves during each heart beat
II. The movement of the impulse passes from the SA node to all the regions of the heart wall
III. The number of the times the heart beats in one minute is 60
IV. Change in the blood volume in all the chambers of the heart occurs during the cardiac cycle
The option with correct statements is
I. The closing and opening of the heart is through the valves during each heart beat
II. The movement of the impulse passes from the SA node to all the regions of the heart wall
III. The number of the times the heart beats in one minute is 60
IV. Change in the blood volume in all the chambers of the heart occurs during the cardiac cycle
The option with correct statements is
View answer and explanation
Correct option: B
II, III and IV
Option B (II, III and IV) is correct because the closing and opening of the heart is through the valves during each heartbeat, the impulse moves from the SA node, the heart beats 60 times in a minute, and blood volume changes during the cardiac cycle.
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