Question

Which of the following is correct during each cardiac cycle?

• A. The volume of blood pumped out by the right and left ventricles is same.
• B. The volume of blood pumped out by the right and left ventricles is different.
• C. The volume of blood received by each atrium is different
• D. The volume of blood received by the aorta and the pulmonary artery is different

Answer 1

The correct option is C

The volume of blood received by each atrium is different

Correct option:

(c) The volume of blood pumped out by the right and left ventricles is same.

1. The stroke volume depends upon the rate at which the ventricles contract and pump blood.
2. Like, when both ventricles contract simultaneously, their combined volume will be less than two times the normal size.

Explanation of Incorrect options

(a) The total amount of blood that is pumped out during one cardiac cycle is always the same. So this statement is incorrect.

(b) This statement is incorrect. The volume of blood received by the right atrium is larger than that received by the left atrium but changes during the cardiac cycle.

(d) During the cardiac cycle volume if blood received by the aorta and pulmonary artery is the same and the statement is incorrect.