1. CHAPTERS 21 & 23 & CHAPTER 5 in Human Sexuality Section
UNIT VI - DISEASES
CHAPTERS 21 & 23
&
CHAPTER 5 in Human Sexuality Section

2. EPIDEMIOLOGY
THE STUDY OF DISEASES

3. 2 MAIN CATEGORIES OF DISEASES
1. COMMUNICABLE = CONTAGIOUS
A. THE COMMON COLD
B. THE FLU
C. AIDS
2. NON-COMMUNICABLE = NOT CONTAGIOUS
A. HEART DISEASE
B. CANCER
C. DIABETES

4. GERMS THAT CAUSE DISEASES
PATHOGENS
GERMS THAT CAUSE DISEASES

5. KINDS OF PATHOGENS 1. BACTERIA
2. VIRUSES – CAUSE MORE INFECTIOUS DISEASES THAN ANY OTHER GERM
3. FUNGI – SPORE-FORMING. EX. RINGWORM & ATHLETE’S FOOT
4. PROTOZOA – SINGLE-CELL ORGANISMS FOUND IN TROPICAL AREAS
5. RICKETSIA – GROWS IN A TICK – CAN CAUSE ROCKY MTN. SPOTTED FEVER
6. PARASITIC WORM – CAUSES A TAPE WORM FROM EATING IMPROPERLY COOKED MEAT (BEEF & PORK) OR SPOILED FOODS

6. WHAT DO THESE LOOK LIKE?

7. HOW DISEASES SPREAD: 1. BY GERM ITSELF
2. MAIN SOURCES – HUMANS, ANIMALS, WATER, SOIL, PLANTS
3. MAIN MEANS FOR ENTRY AND ESCAPE = RESPIRATORY TRACT IN HUMANS
4. NEW HOST – THOSE WITH LOW RESISTANCE CATCH THE GERM

8. BODY’S LINES OF DEFENSE:
1. SKIN & MUCOUS MEMBRANES. EX. BLINK EYES, CRY, COUGH, SNEEZE
2. LYMPH GLANDS – CONTAIN WHITE BLOOD CELLS – FIGHT INFECTION
3. IMMUNE RESPONSE – BODY’S RESISTANCE TO INFECTION:
A. ACTIVE IMMUNITY – BODY PRODUCES ANTIBODIES
B. PASSIVE IMMUNITY – BODY IS GIVEN A VACCINE TO FIGHT INFECTIONS. HELPED BY:VACCINATIONS (POLIO) AND ANTIBIOTICS (SHOTS)