Structure of the heart

Which chamber of the heart pumps oxygenated blood to the body?

• Right atrium

• Left atrium

• Right ventricle

• Left ventricle

What is the main function of the heart?

• To digest food

• To pump blood throughout the body

• To produce oxygen

• To filter waste

Which part of the heart receives deoxygenated blood from the body?

• Left ventricle

• Right atrium

• Left atrium

• Right ventricle

Which blood vessel carries oxygenated blood from the lungs to the heart?

• Pulmonary artery

• Aorta

• Pulmonary vein

• Vena cava

True or False: The aorta is the largest artery in the body

• True

• False

What happens when blood passes through the lungs?

• It picks up carbon dioxide

• It removes oxygen

• It picks up oxygen and removes carbon dioxide

• It turns into plasma

Which side of the heart pumps deoxygenated blood to the lungs?

• Right side

• Left side

• Both sides

• Neither side

Which blood vessel returns deoxygenated blood from the body to the heart?

• Pulmonary vein

• Aorta

• Vena cava

• Coronary artery

What is the function of heart valves?

• To mix oxygenated and deoxygenated blood

• To store blood

• To produce oxygen

• To prevent blood from flowing backward

What happens if the valves in the heart fail to close properly?

• Blood may leak backward

• The heart stops working

• Blood only moves in one direction

• Oxygenated and deoxygenated blood mix completely