Multiple choice

One heart beat indicates _______________.

  1. pumping of blood from right auricle to left auricle

  2. pumping of blood from left side of heart to the aorta

  3. pumping of blood by all the four chambers

  4. pumping of blood from systemic vein to the right auricle

  5. pumping of blood from right auricle to pulmonary artery
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Yes, it is correct. While pumping the blood, different chambers of the heart contract and relax in turns. The contraction and relaxation of different chambers produces a thumping sound. One heart beat indicates one cycle of pumping action by all the four chambers.

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