Anatomy Chapter 19

6. ____make antibodies.
8. ____attack foreign cells and regulate other immune cells.
9. The combination of plasma and the formed elements.
11. The formation of RBC's is called____.
13. Process of making platelets.
14. Play a role in the body defense mechanism.
15. Are rare and migrate to injuries and release histamine and heparin.
18. A heme converts to this when it is stripped of its iron, causes a greenish color in bruises.
19. Very large WBC's which leave circulation to become macrophages.
21. Iron transport protein.
23. When fibrin clot is dissolved.

1. A vascular spasm that lasts about 30 min, is known as the vascular____.
2. ____are especially active against parasites and are sensitive to allergens and injury.
3. When there is an excessive number of WBC's
4. The aggregation of RBC's due to interactions between surface antigens and plasma antibodies.
5. A protein found in RBC's that binds O2 and CO2.
7. 55% of the volume of whole blood is____.
10. ____are the first WBC's at an injury and specialize in attacking and digesting bacteria.
12. Plasma minus fibrinogens is called____.
16. Are the most abundant proteins and makeup about 60% of the proteins found in the blood.
17. Most numerous formed elements, also called red blood cells.
20. Substances that can trigger a protective defense called the immune response.
22. A protein produced by the immune system when it detects harmful substances called antigens.