How many chambers does the human heart have?

Explanation

The human heart has four chambers, two upper chambers called atria and two lower chambers called ventricles. Deoxygenated blood enters the right atrium and is pumped to the lungs, while oxygenated blood returning from the lungs enters the left atrium and is pumped out to the rest of the body. This four-chambered structure allows efficient separation of oxygen-rich and oxygen-poor blood. Explore more Everyday Science MCQs on mcqstutor to keep practicing.