1. By: Brooke Skelly

2. WHAT IS THE IMMUNE SYSTEM? The immune system protects the body from disease and other damaging bodies. The immune system works hard to keep all other systems healthy.

3. PARTS OF THE IMMUNE SYSTEM Thymus, white blood cells, antibodies, epidermis, cilia, mucus, and saliva. Thymus ~ gland that releases a hormone that stimulates white blood cell production White blood cells ~ attack invading bacteria Antibodies ~ identify and remove deadly antigens Epidermis ~ outer layer of cells that cover an organism Cilia ~ expel particles covered in mucus Mucus ~ a slimy substance that keeps things like the throat and lungs moist Saliva ~ watery liquid in the mouth that lubricates chewing and swallowing

4. LINES OF DEFENSE Physical & Chemical Barriers ~ barriers that prevent disease causing organisms from entering the body Nonspecific Resistance ~ responds to cells that go unrecognized Specific Resistance ~ specific responses to specific threats

5. VACCINE USE A vaccine is a biological preparation that builds immunity to a certain disease. Typically, a vaccine includes a diseased agent. DISEASES THAT HAVE VACCINES 1.Polio 2.Rabies 3.Varicella

6. WORKING WITH OTHER SYSTEMS Circulatory ~ immune system cells use the heart and blood vessels as a pathway Digestive ~ deciphers whether foregin substances are food or pathogens Skeletal ~ provides the blood cells that the immune system needs as a method of transportation

7. FACTS The #1 way to boost immunity is to reduce stress. Getting under 5 hours of sleep has been shown to depress immune function in the body. People who lack humor in their lives tend to have less protective immune responses. Dieting also weakens the immune system.