Heart and Blood Vessels

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

• Pumping oxygen to the lungs
• Delivering oxygen-rich blood to body cells
• Breaking down waste products
• Filtering toxins from the blood

Which side of the heart deals with oxygenated blood?

• Left side
• Right side

The pulmonary artery carries:

• Oxygenated blood from the lungs to the heart
• Deoxygenated blood from the heart to the lungs

Deoxygenated blood from the heart to the lungs

• Pulmonary veins
• Pulmonary arteries
• Superior and inferior vena cava

Which blood vessels collect deoxygenated blood from the upper body?

• Superior vena cava
• Inferior vena cava
• Pulmonary artery

What is the function of capillaries in the circulatory system?

• Carry blood away from the heart
• Exchange substances between blood and body cells
• Pump oxygen to the lungs

Which is the largest artery in the human body?

• Aorta
• Pulmonary artery
• Pulmonary vein

Deoxygenated blood from the lower body returns to the heart through which blood vessel?

• Pulmonary artery
• Superior vena cava
• Inferior vena cava

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

• Left atrium
• Right atrium
• Left ventricle
• Right ventricle

What do the pulmonary veins carry?

• Deoxygenated blood from the lungs to the heart
• Oxygenated blood from the lungs to the heart
• Deoxygenated blood from the heart to the lungs