Vaccines and body defenses

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

White blood cells - Leukocytes

Macrophage - Engulf

Lymphocytes

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

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.

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.

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

Task 4: Pus

Task 4: Scabs

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