Blood

4. WBCs that are involved in immunity
8. WBCs; involved in fighting infection
12. hormone that promotes production of RBCs
13. iron containing protein in the blood that is bound to oxygen
15. refers to the percent of red blood cells in a sample
16. WBCs that contain an inflammatory chemical called histamine that attracts other WBCs
18. hereditary bleeding disorder that results from the lack of any of the factors needed for clotting
19. the most numerous WBC; continuously circulate looking for bacteria, viruses, etc.
21. RBC antigens that bind with antibodies and cause clumping
23. blood clot in an unbroken blood vessel
25. blood clot that breaks free and floats within the circulatory system
26. cancerous condition of WBCs; characterized by massive amounts of immature WBCs

1. abnormally high number of WBCs; >11,000
2. stoppage of blood flow
3. the binding of antibodies to blood cell antigens causing clumping of the blood
5. large WBCs that act as macrophages (clean up crew) during chronic infection
6. fragments of cells called megakaryocytes that initiate the clotting process
7. increase in the number of RBCs
9. WBCs that increase in number during allergies or infections by parasitic worms
10. RBC surface antigens that can be identified as foreign and cause an antibody reaction
11. blood stem cell that gives rise to all blood cells
14. insufficient number of circulating platelets
17. red blood cells; carry oxygen
20. abnormally low number of WBCs; <4.000
22. nonliving, fluid matrix of the blood
24. a decrease in the oxygen carrying capacity of the blood