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