The smallest blood vessels. They connect arteries and veins
These blood vessels carry blood to the heart.
These blood vessels carry blood away from the heart.
The largest artery in your body.
The lower chamber of the heart. It has thick muscular walls.
The upper chamber of the heart.
White Blood Cells
These blood cells fight infection. They can change shape to surround germs.
Red Blood Cells
These blood cells carry oxygen throughout your body. They are shaped like a donut without a hole.
These are partial cells. They help stop bleeding in your body.
This system's job is to transport food, oxygen, and wastes throughout your body. It includes the heart, blood, and blood vessels.