The Immune System

2. most common white blood cell; phagocytes
5. peptides and proteins that serve as important signaling molecules and perform regulatory functions
7. destroy cells by nonspecific and specific processes; uses perforins to form pores in enemy cell
8. clumping of red blood cells which can block small blood vessels
10. the study of the internal defense systems of humans and other animals
12. cells with long cytoplasmic extensions; develop from precursor cells in the bone marrow
13. are secreted mainly by macrophages to regulate interactions between white blood and other cells; can update while blood cells on immune progress
15. a third type of blood cell marker; D antigen
17. mast cells that release histamine and other vasodilators
18. immune response that must be acquired either passively or actively
19. the ingestion of bacteria or other material by phagocytes

1. clinical symptom of widespread inflammation; helps the body fight infection with elevated body temperature that increases phagocytosis; promotes break down of lysosomes to destroy infected cells
3. responsible for antibody-mediated immunity; produce specific antibodies that bind to specific antigens
4. causes many of the symptoms of allergies; causes inflammation in an attacked area; vasodilators
6. perforates the plasma membrane of the target cell
9. responsible for cell-mediated immunity; attack body cells infected by invading pathogens
10. communicate that an enemy is preset so that cells can start protecting themselves
11. human leukocyte antigen complex; self recognition protein
14. large phagocytes that develop from monocytes; nongranular white blood cell
16. immune response that you are born with; innate; general protection