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The Immune/Lymphatic System!
Transcript of The Immune/Lymphatic System!
prepare you for following activities
and assessments on the Lymphatic/
Immune System! What is the function of the Immune System? The Immune sistem acts as a defence against illness. It enables our body to know the difference between ourselves, germs, and the outside world. How does skin act as defence for the body? Think of your skin, like a knight's armor. A knights armor protects the knight from harm. Non-Spacific Responce: This particular type of imune response is effective against a wide varity of invaders. These responses include: -A barrier created by the skin -Chemicals in perspiration -Skin Oil -Saliva -Tears -Hairs in our nostrils -Fever caused by inflamitory response -Ciliary Escalator (Cleans lungs and keeps pathegens out of the respetory system) All of these spacific parts work together to defend the body against the growth of pathegens. Spacific Response Effective against spacific pathegens. Lymphocytes or "Leukocytes" that originate in bone marrow. These are WBC's. What is the function of a B-Cell? A B-Cell can produce antibodies but need exposure to foriegn antigens to do so. What is the function of a T-Cell? T-Cells are highly specialized cells in the blood and Lymphnodes to fight bacteria, viruses, fungi, protozones, cancer, etc. within host cells and react to foriegn matter such as an organ transplant. What is the relationship between vaccines and Immunity? Vaccination: - Provides actual artificially aquired immunity through the injection of pathegens or potions of pathegens into the body.vaccinations are an example of acquired immunity because we are not born with it and it must be done artificially. Immunity: naturally acquired immunity includes active immunity resulting from previous contact with a pathogen and the long lasting memory cells which combat it in the future. This armor is like the skin because the skin creates a layer that separates your insides (internal organs and such) From the outsides (diseases, bateria, viruses, etc.). The skin also sheds; This allows for and harmful bacteria, viruses, etc., to be rubbed off. What happens during an allergic response? When a person with a hyper-alert immune system is exposed to an allergin, a series of events occurs. The body produces an adtibody called IgE to fight the allergin. Antibodies attach to a form of blood cell called a mast cell. Most cells are plentiful in airways and the GI tract where allergins tend to enter the body. Antigen-Antibody Reaction Each antibody binds to a specific antigen; an interaction similar to a lock and key An antibody is a protein made by the body’s
Antibodies react with specific antigens to
enable the antigens to be removed from the
body. Immune Disorders: Ulcerative Colitis Ulcerative colitis is a type of inflammatory bowel disease (IBD) that affects the large intestine (colon) and rectum. Rheumatoid Arthritis Rheumatoid arthritis (RA) is a long-term disease that leads to inflammation of the joints and surrounding tissues. It can also affect other organs.
Multiple Sclerosis Multiple sclerosis is an autoimmune disease that affects the brain and spinal cord (central nervous system).