Circulatory System

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Across
  1. 3. what blood picks up in the lungs
  2. 5. a blood vessel that carries blood away from the heart
  3. 7. a thick muscular wall that separates the right side from the left side of the heart
  4. 8. where blood goes from the pulmonary vein
  5. 10. where the blood goes when it leaves the capillaries
  6. 13. a blood vessel that carries blood to the heart
  7. 14. the smallest blood vessels in the body
  8. 15. the first place blood enters in the heart
Down
  1. 1. the largest blood vessel in the body
  2. 2. a hollow muscular organ that propels blood throughout the body
  3. 4. the largest chamber in the heart
  4. 6. the only artery that carries unoxygenated blood
  5. 9. the largest vein in the body
  6. 11. where the blood goes when it leaves the pulmonary artery
  7. 12. a one-way flow meter that keeps blood from flowing backward