BIOL 1002 Chapter : Bio 1002 Chapter 36 Immune System
Document Summary
What are the bodies 3 lines of defense: external barriers (non specific, innate immune response (non specific, adaptive immune response (specific) What are the first line of defense: external barriers. What is the external barrier and its functions: skin, has dry, dead cells at surface & sweat sebaceous glands secreting acids &natural antibiotics like lactic acid. How are the mucus membranes of the respiratory & digestive tract well defended: mucus secretions have antibacterial enzymes like lysozyme, & mucus physically traps microbes entering thru mouth & nose. What do the membrane cilia do: sweep up mucus & microbes & they are coughed or sneezed out of body. What are the four non specific internal defenses: phagocytes, natural killer cells, inflammatory response, fever. What are eaters & killers : wbcs that destroy infected cells by viruses or compromised . Which cells kill cancer cells: phagocytic & natural killer cells.
