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5 Cards in this Set

  • Front
  • Back
Capillaries
The smallest blood vessels where oxygenated blood and unoxygenated blood mix. They connect arteries and veins.
Heart
The main organ in our body that pumps blood throughout the network of arteries and veins.
Lungs
The place where the veins return unoxygenated blood, give off waste gases, and pick up oxygen again.
Arteries
The blood vessels that take oxygenated blood from the heart throughout the body.
Veins
The blood vessels that return unoxygenated blood to the lungs, pick up oxygen, and return the blood back to heart.