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Slide 2 Question of the Day Question: Describe our lab CO 2 and You to an absent student. (What did we do, how did we do it, what did you learn, what were the results, etc.) Answer: Turn in HW AFTER Quiz! Slide 3 Slide 4 Open-Note Check-In Quiz Use Your Entire Binder- No Particular Recommendations Good Luck! Slide 5 Lung Capacity Slide 6 Slide 7 Slide 8 Notes: Immune System Slide 9 Slide 10 IntroIntro Immune system- how your body defends against harmful viruses, bacteria, & fungi (pathogens) Features multiple layers of defense Slide 11 IntroIntro Allergies are exaggerated responses to foreign bodies Immune system complicates organ transplantation Slide 12 Types of Defenses Non-specific defenses- guards against all pathogens indiscriminately; examples: skin acts as physical barrier Slide 13 Types of Defenses Non-specific defenses- guards against all pathogens indiscriminately; examples: skin acts as physical barrier mucous membranes trap pathogens Staphylococcus auerus (yellow) sticking to mucous (blue) on cilia cells Slide 14 Types of Defenses Non-specific defenses- guards against all pathogens indiscriminately; examples: skin acts as physical barrier mucous membranes trap pathogens acidic environment of stomach is hostile Slide 15 Types of Defenses Non-specific defenses- guards against all pathogens indiscriminately; examples: skin acts as physical barrier mucous membranes trap pathogens acidic environment of stomach is hostile fever speeds up body responses white blood cells inflammatory response and more Slide 16 Inflammatory Response Slide 17 Types of Defenses Specific defenses- targets certain pathogens white blood cells mark particular pathogens for destruction & engulf them Slide 18 Antigens & Antibodies Antibodies- bodys proteins that bind to microbes, marking them for destruction Antigens- a foreign molecule that triggers an immune response Ex: proteins, polysaccharides, toxins Slide 19 Antigens & Antibodies Slide 20 p. 969 A.Q. 1a, 2ab, 3ab, 4a Slide 21