Cardiovascular system

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Across
  1. 3. structures in the heart and veins that prevent backflow of blood
  2. 4. atrium, the upper right heart chamber that receives oxygen-poor blood from the body
  3. 5. veins, veins that carry oxygen-rich blood from the lungs back to the heart
  4. 7. blood vessels that carry blood away from the heart
  5. 8. atrium, the upper left heart chamber that receives oxygen-rich blood from the lungs
  6. 10. blood vessels that carry blood toward the heart
  7. 11. ventricle, the lower right heart chamber that pumps blood to the lungs
Down
  1. 1. tiny blood vessels where oxygen, nutrients, and waste are exchanged
  2. 2. ventricle, the lower left heart chamber that pumps oxygen-rich blood to the body
  3. 6. artery, the artery that carries oxygen-poor blood from the heart to the lungs
  4. 7. the largest artery that carries oxygen-rich blood from the heart to the body
  5. 9. the muscular organ that pumps blood throughout the body
  6. 10. cava, the largest veins (superior and inferior) that return oxygen-poor blood to the heart