Heart Structure and Function

Question 1

What are the right and left atria?

Answer 1

Upper chambers of the heart that receive blood (right: deoxygenated from body, left: oxygenated from lungs).

Question 2

What are the right and left ventricles?

Answer 2

Lower chambers of the heart that pump blood (right: to lungs, left: to body).

Question 3

What are atrioventricular valves?

Answer 3

Valves between the atria and ventricles (tricuspid on the right, bicuspid/mitral on the left), preventing backflow.

Question 4

What are semilunar valves?

Answer 4

Valves at the exit of the heart (pulmonary and aortic), preventing blood from flowing back into the heart.