Biology · Human Physiology
Which of the following statements is correct regarding cardiac output (CO) under normal physiological conditions?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Cardiac output is the amount of blood pumped by the right atrium per minute and is always less than venous return.
- 2Cardiac output is the volume of blood ejected by the left ventricle per minute and equals venous return.✓
- 3Cardiac output is entirely independent of heart rate and stroke volume.
- 4Cardiac output decreases when venous return increases under normal conditions.
Correct answer
Cardiac output is the volume of blood ejected by the left ventricle per minute and equals venous return.
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