Circulatory System

These cells, in the blood, carry oxygen and give the blood its color.

• white blood cells

• plasma

• platelets

• red blood cells

The cells in the blood that help fight germs like bacteria and viruses

• red blood cells

• platelets

• white blood cells

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory

• digestive

• muscular

What is the circulatory system made up of?

• Lungs, blood, blood vessels

• Liver, kidneys, and stomach

• Heart, Blood Vessels, and Blood

Your heart pumps blood full of oxygen throughout your entire body through tubes called _____________.

• veins

• arteries

• capillaries

Blood is carried back to your heart in little tubes called ____________.

• veins

• arteries

• capillaries

What does circulate mean?

• pump blood

• beat quickly

• go around and around

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

How many types of blood vessels are in our body?

• 1
• 2
• 3
• 4