Across
- 2. Contraction of the heart
- 4. Process of digesting bacteria by a cell
- 6. Blood vessels that are deep seated
- 7. Helps in making a clot
- 8. Number of heartbeats per minute
- 11. Relaxation of the heart
- 12. Blood vessels that have valves
- 13. Organ than makes blood
- 15. Membrane that covers the heart
- 16. Thickening of the walls of the arteries
- 17. Artery that gives pure blood to the kidneys
- 18. WBC's involved in an immune response against virus
Down
- 1. Lower chamber of the heart
- 2. instrument that measures blood pressure
- 3. Ability to squeeze through walls of blood vessels
- 5. Artery that gives blood to the heart muscles
- 8. Delivers impure blood to the lungs
- 9. Another name for a pacemaker
- 10. Leukocytes that release histamine
- 14. Another name for platelets