Pre assessment - Grade 12 - Structure of the heart

What is the function of the heart valves in the circulatory system?

• Regulate blood pressure

• Control the flow of blood

• Produce red blood cells

• Filter impurities from the blood

Which chamber of the heart is responsible for pumping oxygenated blood to the rest of the body?

• Right atrium

• Right ventricle

• Left atrium

• Left ventricle

What structure prevents the backflow of blood between the left atrium and left ventricle?

• Aortic valve

• Mitral valve (Bicuspid valve)

• Pulmonary valve

• Tricuspid valve

Where does the heart receive its own blood supply to meet its oxygen demand?

• Coronary arteries

• Pulmonary arteries

• Aorta

• Vena cava

Which vessel carries deoxygenated blood from the upper part of the body to the right atrium?

• Pulmonary artery

• Pulmonary vein

• Superior vena cava

• Inferior vena cava