Consider the following statements. I. The movement of the impulse passes from the SA node to all...

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Consider the following statements.
I. The movement of the impulse passes from the SA node to all the regions of the heart wall.
II. The number of the times the heart beats in one minute is 72 .
III. Change in the blood volume in all the chambers of the heart occurs during the cardiac cycle.
Choose the option containing correct statements.
(a) I, II and III
(b) II and III
(c) I and II
(d) 1 and III
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