The circulatory system

Which organ pumps blood to the body ?

• lungs

• heart

• stomach

• kidneys

The blood vessels that carry the blood out of the heart to the organs

The circulatory system works with the respiratory system

• True

• False

Which blood vessels carry the deoxygenated blood back to the heart?

• veins

• arteries

• capillaries

The name of the biggest artery in the heart

The heart has 4 chambers

• True

• False

Which picture shows the blood flow in the capillaries

• 
• 

The upper chambers of the heart are called

The bottom chambers of the heart are called

• aorta

• atria

• ventricles

• vena cava