1. LO: SWBAT understand and explain how our body comes under attack.
DN: List some ways in which you can get sick. What causes you to be sick?
HW: August 2015 #58,59

2. the body is not working as it should The body is not in homeostasis
What is wrong?
Disease-
the body is not working as it should
The body is not in homeostasis
Show movie Outbreak

3. What is the common theme?
Disease in humans may result from foreign invader organisms called…..
PATHOGENS
Pathogen: any disease causing organism

4. Pathogens
Bacteria
Viruses
Fungi
Parasites

5. Bacteria Characteristics
Prokaryotes
Unicellular organisms
Lack most ORGANELLES, no true nucleus.

6. Examples Antibiotics Strep throat Salmonella – toxins Syphilis
What will the doctor
Give you?
Antibiotics

7. Virus A VIRUS IS NOT A CELL (IT IS NOT ALIVE)
DNA or RNA + Protein Coat
Very small, smaller then a CELL.
They can only reproduce INSIDE a cell.
A virus works by injecting its DNA into a cell, turning the cell into a virus producing factory.

8. Can you take antibiotics?
Examples
HIV
Chicken Pox
Influenza
Can you take antibiotics?

9. Antibiotics will not work on a virus- they are specific for bacteria.

10. Fungus Athlete’s foot Ring worm What can the doctor Prescribe?
Fungicides

11. Organisms that feed off of other organisms
Parasites
Organisms that feed off of other organisms
Examples: tapeworm, heartworm, trypanosoma, toxocara
To lose weight, pills that had tapeworms

13. Host: The organisms that the pathogen is living/feeding off of
Vector: What is transmitting the pathogen.
A vector could be living or nonliving.
Examples: other animals, insects, water, desk

14. How are pathogens transmitted?
Blood
Food
Sex
Air
Animal

15. Diagnosing – determine the disease you have
Diagnosis is made based on symptoms , examination and testing

16. Prevention vs. Treatment
Prevention – ways to avoid getting the disease.
Treatment – ways to help people with a disease to get better.

17. Besides pathogens, what else can cause disease?
Toxic Substances
Inherited
Disorder
Organ Malfunction
Poor Nutrition
Risky Personal
Behavior