Cardiovascular System

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Across
  1. 4. blood vessel that carries oxygenated blood away from the heart
  2. 9. tiny blood vessel where gas/nutrient exchange occurs
  3. 10. red blood cell that carries oxygen via hemoglobin
  4. 13. white blood cell that fights infections
  5. 15. molecule that triggers an immune response (e.g., on RBCs for blood typing)
  6. 16. another term for platelet, helps blood clot
Down
  1. 1. compartments of the heart (atria or ventricles)
  2. 2. iron-rich protein in RBCs that binds oxygen
  3. 3. phase when the heart contracts to pump blood
  4. 5. structure that prevents backflow of blood in the heart
  5. 6. phase when the heart relaxes between beats
  6. 7. blood vessel that returns deoxygenated blood to the heart
  7. 8. thick muscular layer of the heart wall
  8. 11. muscular wall dividing left and right heart sides
  9. 12. sudden loss of brain function due to blocked or ruptured blood vessel
  10. 14. largest artery, carries blood from the left ventricle