Flow of Blood Through the Heart

Where does the blood go immediately after leaving the right ventricle?

• Aorta

• Pulmonary artery

• Pulmonary vein

• Left atrium

Which side of the heart contains oxygen-rich blood?

• Left side

• Right side

• Both sides equally

• Neither side

Why is the left ventricle's wall thicker than the right ventricle's?

• It pumps blood to the lungs.

• It pumps blood to the entire body.

• It pumps blood back to the right atrium.

• It receives blood from the lungs.

What prevents backflow of blood from the ventricles to the atria during contraction?

• Aorta

• Valves

• Veins

• Arteries

In which chamber does the deoxygenated blood enter the heart?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

How does oxygen-rich blood return to the heart from the lungs?

• Through the aorta

• Through the pulmonary veins

• Through the pulmonary artery

• Through the vena cava

What is the function of the pulmonary artery?

• Carry oxygenated blood to the body

• Carry deoxygenated blood to the lungs

• Return oxygenated blood to the heart

• Pump blood directly into the aorta

Which of the following is the largest artery in the body?

• Pulmonary artery

• Vena cava

• Aorta

• Coronary artery

What would happen if the valves in the heart failed to close properly?

• Blood would not reach the lungs.

• Blood would flow backward.

• Blood would move too quickly through the heart.

• Blood would not enter the ventricles.

Which vessel returns blood to the heart from the rest of the body?

• Pulmonary vein

• Pulmonary artery

• Superior and inferior vena cava

• Aorta