PBS 4.1

How many chambers are in the human heart?

• one

• two

• three

• four

How many oxygenated chambers are in the human heart?

• one

• two

• three

• four

Arteries carry blood _____ the heart.

• toward

• away from

• near

• outside

Veins carry blood _____ the heart.

• toward

• away from

• near

• outside

What is the purpose of valves in the heart?

• to push blood forward

• to prevent blood from flowing backwards

• to carry oxygenated blood to the body

• to carry deoxygenated blood to the heart

The right side of the heart contains _____ blood and the left side of the heart contains _____ blood.

• oxygenated; deoxygenated

• deoxygenated; oxygenated

• deoxygenated; deoxygenated

• oxygenated; oxygenated

What is the effect of narrowed arteries on a person's blood flow and pressure?

• increased blood flow and increased pressure

• increased blood flow and decreased pressure

• decreased blood flow and increased pressure

• decreased blood flow and decreased pressure

The wall of the _____ is thicker because it has to pump blood to the whole body.

• right atrium

• left atrium

• right ventricle

• left ventricle

Which is the correct direction of blood flow?

• right atrium, right ventricle, pulmonary artery

• right atrium, left atrium, pulmonary artery

• left ventricle, pulmonary artery, aorta

• left ventricle, left atrium, aorta

The largest artery in the body is called the...

• pulmonary artery
• jugular artery
• carotid artery
• aorta