INFECTIOUS DISEASE- passed from person to person

Pathogens Bacteria- 1. Environment- _________________ 2.Good bacteria-____________________ 3.Bad bacteria- ____________________ Diseases: Virus- ____________ pathogen 1.Needs a “________” cell Diseases: ________________________________________ ________________________________________

Fungi- ______________________ 1.______________- dark, damp 2._______________ yeast, mushroom Diseases: ___________________ Protist- single celled, larger than bacteria 1. __________________________ Diseases: ________________ Parasite- usually visible without a microscope 1.________________________ Disease: ________________

Ways Disease are Spread _____________ physical contact with infected person: hand shake, hug, kiss _____________ close contact with infected person: sneeze, cough ___________________drinks, cans, pencils, silverware, phones, hats, combs ___________________bites (rabies) stings (malaria)

Carriers People who can give a disease to others, yet show NO sign or symptom of the disease. They pass it on to others who become ill from the disease.

Things that may affect your immunity level: 1._______________ 2._______________ 3._______________ 4._______________ 5._______________ Immunity:__________________ _________________________

Preventing Infectious Disease 1.Eat well balances meals 2.__________________ 3.Exercise 4._____________________ 5.Do not share items that transfer pathogens 6.______________________ 7._____________________________ 8.Get immunizations

3 Lines of the Body’s Defenses ____________________________ 1.Skin 2.Mucous Membrane 3.Lachrymal glands- tears 4.Cilia 5.Cerumen- earwax 6.Salivary glands- saliva 7.Hydrochloric acid- stomach 8.Reflexes- sneezing, coughing, blinking, fever

_____________________________ LYMPH SYSTEM- a network of vessels that collect fluid from the tissues in your body and return it to your bloodstream. ________________-- white blood cells that carry out most of the immune systems functions 1.B lymphocytes (B cells)- produce ____________ 2.T lymphocytes (T cells)- live in the blood and lymph system Helper T- _____________________ Killer T- _____________________ Memory Cell-_______________________

Circulatory System- (blood) _________________ called PHAGOCYTES rush to the infected area and destroy pathogens. Phagocytes “eat up” pathogens

This is what happens when a pathogen enters your body (cut, scrape, breath it in) 1.Damaged cells release chemicals 2.Blood vessels and glands in the injured area become enlarged 3.Fluid leaks out of the blood vessels along with PHAGOCYTES 4.Phagocytes eat up pathogen 5.Area becomes swollen /sore/ inflamed 6.The fluid, phagocytes, and dead cells accumulate, making a thick white liquid called “pus” 7.Eventually the cellular process heals the damage and it goes away

3 rd Line- __________________ If a pathogen enters your body for the first time, your immune system must recognize it, and build an arsenal of weapons to fight it. This takes time- this time allows the pathogen to multiply and make you sick. If a pathogen that has previously entered your body comes back and enters again, your immune system will quickly recognize it and launch an attack. This generally occurs so quickly you will never become ill.

Parts of the Immune System ______________ - identify disease and alert the lymph system ______________ - cell factories ______________ - fight infection ______________ - remember how to fight the disease. Last a life time

Types of Immunity _______________ - will not last forever 1.Killed virus vaccine- need a booster shot flu, tetanus 2. ___________________ - she has memory cells in her blood ________________ - will last a lifetime 1.Live virus vaccine- mumps, measles 2.Get the disease

11 Infectious Diseases 1.Rubella (German Measles) danger to pregnant women= birth defects VIRUS- _____________________ Fever, rash better in a few days Vaccination- ___________ 2.Polio- ________________________________ VIRUS- indirect contact Vaccine= _________

3. _____________ coughing- grey membrane grows over throat- death BACTERIA- indirect Vaccine- DPT 4. ___________________________cough- spasms-lungs collapse BACTERIA-indirect Vaccine-DPT 5. _________________ puncture wound. Muscles lock can cause death BACTERIA- puncture wound Vaccine-DPT needs booster shot every 6-8 years

6. _________________VIRUS- indirect NO CURE Medication for symptoms but does not cure 7. ____________________ body aches-high fever- can kill----do not take aspirin VIRUS- indirect Vaccine- Flu Shot 8. ________________ damages the liver VIRUS A= infected food or water B&C= Blood Vaccine

9. ____________________ (mono) need a blood test to identify- last for 3-6 weeks Tired, swollen glands, sore throat VIRUS- saliva & No med’s 10. ________________ cough- weight loss, blood coughed up Need blood test and chest x-ray BACTERIA- indirect -- Vaccine 11. ______________ abdominal pain, scabbing, can die VIRUS- DIRECT CONTACT VACCINE=====DEAD DISEASE