DISEASE IMMUNITY DEFENSE MECHANISMS IMMUNE RESPONSE CAUSES PATHOGENS

DISEASE & IMMUNITY ØDEFENSE MECHANISMS ØIMMUNE RESPONSE ØCAUSES ØPATHOGENS

DISEASE (P. 1029) • DEFINITION: IS ANY CONDITION THAT DISRUPTS ______ THE BODY FROM WORKING PROPERLY OR MAINTAINING HOMEOSTASIS

CAUSES OF DISEASE • PATHOGENS

PATHOGENS FOREIGN INVADER ORGANISMS MAY CAUSE DISEASE FOUND IN THE ØFOOD ØWATER ØAIR WE EAT !!

EXAMPLES OF PATHOGENS • VIRUS BACTERIUM FUNGUS PARASITES

ABNORMAL CELLS • MAY CAUSE CANCER. THESE ABNORMAL CELLS WHICH RESULTS FROM UNCONTROLLED CELL DIVISION DUE TO GENETIC MUTATION EXPOSURE TO CERTAIN CHEMICALS • AND RADIATION

TOXIC SUBSTANCES lead Or radiation poisoning

POOR NUTRITION • SCURVY (Deficiency of vitamin C) or Goiter ( a Deficiency of Iodine

ORGAN MALFUNCTION • HEART ATTACK • AND • STROKE

INHERITED DISORDER • • TAY SACHS DOWN SYNDROME KRABBE DISEASE SICKLE CELL ANEMIA

RISKY PERSONAL BEHAVIOR LUNG CANCER AIDS SYPHILIS SKIN CANCER

VIRUS • ARE COMPOSED OF Protein coats And DNA. They reproduce when they I n v a d e Living cells

VIRUS EXAMPLE • Common cold ( Rhinovirus) Airborne, direct contact with infected person

INFLUENZA 2 TYPES: A, B PLUS SUBTYPES AIRBORNE, DIRECT CONTACT WITH INFECTED PERSON, DROPLET INFECTION

CHICKEN POX AIRBORNE, DIRECT CONTACT WITH INFECTED PERSON.

MEASLES

BACTERIUM • ARE ( One celled) Organisms

Bacterial Illnesses • Include ( Poisons from Toxins) given off by some bacteria. (strep throat, syphyilis and food poisoning • Antibiotics are used to treat many bacterial diseases

Bacterial disease Examples • Tuberculosis

MENINGITIS

TETANUS CONTAMINATED WOUND

PARALYSIS FROM TETANUS

FUNGI • ARE ( ORGANISIMS) MADE OF EITHER ONE OR MANY CELLS. THEY INCLUDE ( YEAST) AND (MOLDS). THEY GET THEIR NOURISHMENT BY (ABSORBING) PRE-DIGESTED ORGANIC SUBSTANCES

ATHLETE’S FOOT

RINGWORM

PARASITES • ARE EITHER ONE-CELLED OR MULTICELLULAR ANIMALS, THAT SURVIVE BY ( LIVING) AND (FEEDING) OFF OTHER LIVING ORGANISMS

LEACHES

TAPEWORM

MALARIA

SCHISTOSOMIASIS