Dr. Lisa Summer 2011 1 (1) Review & read Chapter 14. Study the questions below in study groups. Do multiple choice questions (1-15), and the concept questions/writing to learn (1-17) at the end of the chapter. 1. Summarize the three lines of host defense. Which ones are pathogen-specific and which ones are non-specific? 2. Define the following terms: susceptibility, innate immunity, adaptive/acquired immunity, active immunity, and passive immunity. 3. What anatomical and physical barriers are considered part of the non-specific defenses? What chemicals, enzymes and mechanisms are associated with each one? (Keratinized skin, sebum, ciliated epithelium, enzymes, pH, chelating agents, sebum, urine, vomit, tears, blinking, sneezing, coughing, diarrhea etc) 4. How does a normal microbiota promote resistance to pathogens? Based on your answer, do you support the use of antimicrobial products in everyday items? 5.
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