Question of the Day

2. Question of the Day Question: Describe our lab “CO2 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!

4. Open-Note Check-In QuizUse Your Entire Binder- No Particular RecommendationsGood Luck!

5. Lung Capacity

8. Notes: Immune System

10. Intro • Immune system- how your body defends against harmful viruses, bacteria, & fungi (pathogens) • Features multiple layers of defense

11. Intro • Allergies are exaggerated responses to foreign bodies • Immune system complicates organ transplantation

12. Types of Defenses • Non-specific defenses- guards against all pathogens indiscriminately; examples: • skin acts as physical barrier

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

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

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

16. Inflammatory Response

17. Types of Defenses • Specific defenses- targets certain pathogens • white blood cells mark particular pathogens for destruction & engulf them

18. Antigens & Antibodies • Antibodies- body’s proteins that bind to microbes, marking them for destruction • Antigens- a foreign molecule that triggers an immune response • Ex: proteins, polysaccharides, toxins

19. Antigens & Antibodies

20. p. 969 A.Q. 1a, 2ab, 3ab, 4a

21. p. 969 A.Q. 1a, 2ab, 3ab, 4a