Mechanical - All body defenses that protect one from any kind of pathogen 2. Skin and Mucous Membranes A. Mechanical Factors - Include intact skin, keratin, lachrymal apparatus of eye, saliva, mucous, and urine. Phagocytosis - Ingestion of a microorganism or particulate matter by phagocytic cells. A. Formed Elements of the Blood B. Specific Kinds of Leukocytes - C. Action of Phagocytic Cells 1. Granulocytes migrate to area of infection 2.
Monocytes become fixed macrophages and then have specific names depending of area.
Granulocytes increase most first and them monocytes increase. Bodily response to cell damage, it is characterized by redness, pain, heat, and swelling. Hypothalamus releases prostaglandins that reset the temperature of the body to a higher temperature thus causing fever. G. Antimicrobial Substances 1. Interferons - Are antiviral proteins produces in response to viral infection.