Across
- 2. Type of blood cell that carries oxygen
- 4. Number of chambers in the human heart
- 5. Type of blood cell that is part of the immune system
- 7. Lower chambers of the heart
- 8. Only artery that carries deoxygenated blood
- 9. Tiny vessels where gas exchange takes place
- 13. Vessels that carry blood away from the heart
- 15. Valve between right atrium and ventricle
- 16. Upper chambers of the heart
- 17. Straw colored liquid that is the major component of blood
- 18. Valve between left atrium and ventricle
Down
- 1. Node responsible for ventricle contraction
- 3. Coordinated movement of the heart muscle
- 6. Protein responsible for transport of oxygen
- 10. Node responsible for contraction of atria Node responsible for atria contraction
- 11. Vessels that carry blood to the heart
- 12. Largest artery in the body
- 14. Cell fragment involved in clotting