The Circulatory System
Across
- 6. line of defence that is specific to a specific invading pathogen (specific antigen)
- 9. virus that attacks the body’s white blood cells (Helper T cells)
- 11. cell fragment in the blood responsible for blood clotting
- 14. another name for red blood cell
- 15. cancer of the white blood cells
- 17. measure of blood pressure during ventricular contraction
- 19. fluid between the cells of tissues
- 21. valve separating the left atrium and left ventricle
- 23. white blood cells attach nervous tissue in the brain and spinal cord
- 24. widening or bulging of the artery
- 26. type 1; antibodies attach the cells of the pancreas; as a result, insulin is not produced
- 27. pathway from heart to lungs and back to heart
- 29. artery that takes oxygenated blood away from the heart to the body
- 30. rate number of heart beats per minute
- 31. name of fluid in lymph vessels
Down
- 1. line of defence with physical barriers such as skin and eyelashes
- 2. “ID tags” on the surface of cells
- 3. pathway from heart to body and back to heart
- 4. measure of blood pressure as heart rests and refills
- 5. sticky threads that cling to a cut trapping red blood cells and forming a scab
- 7. another name for white blood cell
- 8. name of smallest artery
- 10. disorder in which blood does not clot properly
- 12. hardening of arteries due to buildup of plaque
- 13. line of defence with non-specific responses such as the inflammatory response
- 16. procedure used to widen blocked arteries
- 18. valves that cause the “dub” sound of a heartbeat
- 20. vein that returns deoxygenated blood to the right atrium from the upper body
- 22. node that generates nervous signals that cause the heart to contract
- 24. proteins that recognize foreign substances and neutralize them
- 25. interruption of blood flow to the brain
- 28. white blood cells attack the whole body