1. Vaccines and body defenses

2. Task 1: our bodies natural barriers to disease
The breathing organs produce _____ to cover the lining of these organs and _____ the microbes
The _____ acts as a barrier
Stomach produces stomach _____
_____ contain an enzyme that kills bacteria
If our skin is cut ______ seal the wound by clotting
TEARS ACID MUCUS TRAP PLATLETS SKIN

3. White blood cells - Leukocytes

4. Macrophage - Engulf

5. Lymphocytes

6. Task 2:
Draw and explain how the bodies WBC defend against disease,

7. What is a vaccine??
A vaccine is any preparation intended to produce immunity to a disease by stimulating the production of antibodies.
Vaccines include, for example, suspensions of killed or attenuated microorganisms, or products or derivatives of microorganisms.
The most common method of administering vaccines is by injection, but some are given by mouth or nasal spray.

8. How they work
Vaccines help reduce the risk of a disease by introducing a killed or attenuated version of the disease-causing organism to the body’s immune system.
If our immune system then encounters the disease-causing germ, quick recognition allows our body to fight infection with a rapid and effective immune response.
In this way, vaccines mimic the body’s natural immunity.

10. Task 3: Vaccines What is a vaccine? How do they work?
What are the benefits of vaccination?

11. Task 4: Pus

12. Task 4: Scabs

13. Task 4: Vomit.
Describe the benefit of each of these defenses.