Circulatory System.

Viens are an important part

of our circulation system

they are responsable for

returning deoxidnate blood

back to the heart after ateries

carry blood out.

The vena cava is the

largest vein in the body.

Veins have much thinner walls

than arteries.

Arteries and arterobes

arteries are blood vessels

that carry blood away from

the heart.

The heart around the body

and keeps you alive. you need

the heart other wise you

wouldnt be alive.

This is a diagram of the ciculartory