Ch12 Host Defenses I

3. A small set of receptor proteins that bind molecules or structure common to microbes such as viruses and bacteria, found on potential pathogens (abbr.)
4. Substance produced by membranes of certain tissues that traps and allows for the removal of microbes or debris.
7. _____ immunity includes barrier defenses and internal defenses.
8. Only vertebrates have ________ immunity, also known as acquired immunity.
9. phagocytic cell found in mammals that are an agranulocyte and originate from monocytes.
12. a fluid rich in white blood cells, damaged tissue debris, and dead pathogens resulting from an infection.
13. molecules released by macrophages and neutrophils involved in the immune response, promoting blood flow to site of infection or injury.
14. Polysaccharide substance found in the exoskeleton of insects.
15. phagocytic cell found in mammals that are attracted by signals from infected tissues, also known as "segs" due to the odd shape of the nucleus.

1. The ingestion and breakdown of foreign substances and some microbes, where special cells engulf cells or debris as a defense mechanism.
2. Enzyme that breaks down bacterial cell walls, protecting against ingested pathogens.
5. A generalized defense that is active immediately upon infection; all animals have this form of immunity.
6. A life threatening condition caused by an overwhelming inflammatory response, resulting in a 40% average mortality rate.
10. chemical involved in innate immunity that are released by mast cells, triggering vasodilation and permeability to tissues.
11. peptide that prods innate defense, interfering with viruses and helping activate macrophages.