The Cardiovascular System

There are how many chambers in the heart?

• 2

• 3

• 4

• 0

An average human heart is roughly as big as...

• Your fist

• Your foot

• Your left lung

• Your liver

Capillaries ...

• are the smallest blood vessels

• have very thin walls

• are found all over the body

• All of these

The … separates the two sides of the heart

Veins have a small internal diameter

• True

• False

Oxygen is carried in which component of blood

• White blood cells

• Platelets

• Plasma

• Red blood cells

Which of these is the correct passage of blood through the left side of the heart?

• atrium, tricuspid valve, ventricle, aorta

• ventricle, atrium, tricuspid valve, aorta

• atrium, bicuspid valve, ventricle, aorta

• ventricle, bicuspid valve, atrium, aorta