Understanding the Human Heart

What is the primary function of the heart?

• To store oxygen

• To produce red blood cells

• To pump blood throughout the body

• To filter blood

How many quarts of blood does the heart pump every minute?

• About 2 quarts

• About 5 quarts

• About 8 quarts

• About 10 quarts

What color does blood turn when it gets oxygenated in the lungs?

• Yellow

• Blue

• Green

• Red

Which side of the heart receives oxygen-poor blood from the body?

• Both sides equally

• The right side

• Neither side

• The left side

What is the role of the heart valves?

• To prevent backflow of blood

• To cool down the heart

• To generate electrical impulses

• To oxygenate the blood

During which phase does the heart contract?

• Systole

• Diastole

• Both systole and diastole

• Neither systole nor diastole

What is the term for the relaxation phase of the heart?

• Expansion

• Contraction

• Diastole

• Systole

How are the heart's muscles nourished?

• Through the capillaries in the lungs

• Through the pulmonary arteries

• By the coronary arteries

• Via the aorta

What initiates the heart's electrical impulses?

• The right atrium

• The right ventricle

• The left atrium

• The left ventricle

What ensures the heart beats in a coordinated rhythm?

• The aortic valve

• The mitral valve

• The conduction system

• The coronary arteries