Circulatory System

What is the main organ of the circulatory system?

• Lungs

• Heart

• Capillaries

• Veins

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

• To pump oxygenated blood to the body's tissues

• To carry deoxygenated blood from the body's tissues to the lungs

• To exchange nutrients, oxygen, and waste products with tissues

• To return blood from the body to the lungs

Which blood vessel carries deoxygenated blood from the upper body to the heart?

• Aorta

• Superior Vena Cava

• Inferior Vena Cava

• Pulmonary Artery

What is the role of capillaries in the circulatory system?

• They carry oxygenated blood from the lungs to the left atrium

• They exchange nutrients and oxygen with tissues at the cellular level

• They carry deoxygenated blood from the body to the right atrium

• They carry oxygenated blood from the left ventricle to the body

Which type of blood vessels carry blood away from the heart?

• Veins

• Capillaries

• Arteries

• Venules

What is the function of the inferior vena cava?

• Carry deoxygenated blood from the lower body to the right atrium.

• Carry oxygenated blood from the lower body to the right atrium.

• Carry deoxygenated blood from the upper body to the right atrium.

• Carry oxygenated blood from the upper body to the right atrium.

True or False: There are six valves in the heart.

• True

• False

Which valves control blood flow from the atria to the ventricles?

• Mitral and tricuspid valve

• Aortic and pulmonary valve

• Superior and Inferior Vena Cava

• Capillaries and Alveoli

Veins carry blood ____________________ to heart while arteries carry blood _____________________________ the heart.

• toward, away from

• away from, toward

Put the flow of blood through your heart in order. Start with deoxygenated blood coming to the heart.

• lungs

• Right ventricle

• Right atrium

• left ventricle

• left atrium