Circulatory System Unit

What does the superior vena cava carry?

• Oxygenated blood to the heart from the lower body

• Deoxygenated blood to the heart from the upper body

• Oxygenated blood to the heart from the upper body

• Deoxygenated blood to the heart from the lower body

Where does the right atrium receive blood from?

• The left atrium and left ventricle

• The superior and inferior vena cava

• The pulmonary veins

• The aorta

Which chamber does the right atrium pump blood to next?

• The left atrium

• The left ventricle

• The tricuspid valve

• The right ventricle

How many valves does the heart have to prevent blood from flowing backwards?

• 2

• 3

• 4

• 5

What is the tricuspid valve named for?

• Its triangular shape

• Its location in the heart

• The number of flaps it has

• The sound it makes

What is the function of the septum in the heart?

• It pumps deoxygenated blood to the lungs.

• It is a muscular wall that keeps oxygenated and deoxygenated blood separate.

• It controls the blood flow through the tricuspid valve.

• It oxygenates the deoxygenated blood.

Where is the right ventricle located in the heart?

• Above the tricuspid valve.

• Below the tricuspid valve.

• On the left side of the heart.

• On the outside of the heart.

What is the function of the pulmonary valve?

• It allows blood to flow from the heart to the lungs.

• It prevents blood from flowing back into the left ventricle.

• It prevents blood from flowing back into the right ventricle.

• It regulates blood flow to the brain.

What is unique about the pulmonary arteries compared to other arteries in the body?

• They carry oxygenated blood to the heart.

• They are the only arteries that carry deoxygenated blood.

• They carry blood away from the lungs.

• They are the smallest arteries in the body.

What are the tiny blood vessels in the lungs called where the exchange of gases occurs?

• Veins

• Arteries

• Capillaries

• Bronchioles