2. Chapter 12 Immunity

3. US Cause of Death Early 1900 – infectious micro killers Today- reduced deaths from micros –Immunization –Nutrition –Sanitation

4. Underdeveloped Countries Infectious disease problem today –Poverty –Lack nutrition

5. Globally #1 Cause Death Infectious disease –Protozoa –worms –Bacterial –viral

6. US Rise Infectious Poverty Drugs Alcohol New strains viral and bacterial

7. Pathogen Makes you sick Cause infections

8. Virus Non-living Must have host Reproduce/grow in host

9. Virus Types AIDS Cold Flu Polio Hepatitis Mumps Chicken pox

10. Bacterial Pneumonia Tuberculosis gonorrhea

11. Terms Communicable- person to person Vector-animal to person

12. Immune System Factors Nutrition Exercise sleep Stress Genetics Pre-exposed

13. Tuberculosis “Poverty Disease” –Poor nutrition –Sanitation Affects Lungs

14. Rise Infectious In Industrialized Global Travel Growth Cities Human sexuality Poverty increasing Drug use increasing

15. Infectious Disease Factors General health Sanitation Antibiotics Vaccines

16. Antibiotics Kill bacteria Not virus Bacterial mutations reduce effectiveness

17. Body Defense Skin-1 st Cilia Mucus membranes Cough/sneeze Platelets White blood cells

18. Cold/flu Many strains Susceptible to pneumonia Vaccines prepare for certain yearly strain

19. Lyme Disease Bacteria in tick Need antibiotics Symptoms –Fever, skin lesions, fatigue, neurological, ache, stiff neck

20. Mononucleosis Viral Spread in saliva Adults develop immunity Rest is cure

21. Hepatitis Liver virus A-E mild –Fecal to mouth transmission B,C,D chronic- leads to liver cancer –Needle, saliva, air A,B have vaccines

22. Immune Defense Antibodies-proteins fight virus/bacteria Lymphatic system-filter virus/bacteria T cells –Helper T- identify pathogen –Killer T- attack pathogens –Suppressor T-memory cells

23. Vaccines Mumps Measles Polio Small pox Hepatitis Whooping cough

24. Allergies Immune attack pollen, mold, dust, food, chemicals, drugs Produce antibodies histamine –Local blood flow increases –Narrow air tubes –rash

25. Asthma Genetic Psychosomatic –Stress –Emotions Bronchial dilators –Corticosteroids

26. Autoimmune Disease Attack own tissue Unknown cause

27. Autoimmune Types Arthritis-attack bone, cartilage Multiple sclerosis-attack nerves

28. AIDS HIV Virus Low T cells Lives off T cells Blood to blood transmission