1. Infectious Diseases

2. ______________ - a disease that is not spread
A ____________ is a condition that affects the normal functioning of the body.
noninfectious
______________ - a disease that is not spread
from one living organism to another
cancer, heart disease, arthritis
Examples: ____________________________
infectious
______________ - a disease that is spread
from one living organism to another
Examples: _________________________________
Yellow fever, common cold, chicken pox

3. pathogen
______________: a disease-causing microorganism

4. How are pathogens spread?

5. through the air
__________________: pathogens are
spread when a person coughs or sneezes

6. Contaminated object
__________________: a sick person touches an object that is then touched by another person

7. person to person
__________________: spread by direct contact between people

8. animals
__________________: spread from an animal to a person such as by a tick bite

9. food and water
__________________: people can eat or drink contaminated food or water

10. What are some preventions we can use?

11. pasteurization
__________________: using heat to kill microorganisms

12. pertussis
polio
vaccine
__________________: a substance that allows your body to develop resistance or immunity to a disease
Hepatitis B
tetanus
Diphtheria

13. What are some treatments?

14. antibiotics
__________________: a substance that kills or slows the growth of bacteria

15. __________________: rest and fluids
Basic care

16. How does your body defend itself from diseases?

17. skin
dead
________: - outermost layer is _______so pathogens don’t have a cell to infect - pathogens fall off when the dead skins cells fall off - skin also secretes _____that kill many pathogens
oils

18. eyes and mouth nose fever
__________________: have special enzymes or chemicals that destroy the pathogen
nose
__________________: pathogens are washed
down the back of the neck by mucus and
then digested in the stomach
fever
__________________: a moderate fever can slow the growth of pathogens and activate the cells of the immune system

19. immune system
__________________: a collection of cells, tissues and organs that work together to fight off pathogens