Circulatory System

The _________system carries oxygen and nutrients to all parts of our bodies?

• respiratory

• circulatory

What is the main organ of our circulatory system?

• heart

• skin

The heart is about the size of your ________.

• brain

• fist

What do we call the movement of blood through the heart and around the body?

• circulation

• digestion

What do we call the tiny tubes that carry blood AWAY from the heart?

• valves

• arteries

What do we call tiny tubes that RETURN oxygen poor blood back to the heart?

• veins

• ventricles

What do we call the smallest blood vessels in our bodies?

• capillaries

• cells

The part of the blood that helps you stop bleeding when cut yourself is called _____________.

• red blood cells

• platelets

The part of the blood that carries oxygen is called ___________. (Remember we can't live without our blood-line)

• red blood cells

• white blood cells

The part of the blood that fights off harmful bacteria and viruses is called _______________.

• red blood cells

• white blood cells