Immune System Non-Specific Immunity Specific Immunity Cells of the Immune System • http://www.youtube.com/watch?v=uwMYpTY sNZM • http://www.youtube.com/watch?v=Z36dUdu Ok1Y Allergies Lymph System Lymph System • Acts as the bodies drainage system returning fluid back to the blood. • Fluid flows through lymph vessels. The fluid is filtered through lymph nodes. • Harmful organisms are trapped and killed by WBC’s in the nodes. • Antibodies are manufactured in the lymph nodes and are carried throughout the body. • Antibodies combine with antigens, fit like pieces of a jigsaw puzzle. • Antibodies coat the pathogen making it easier to find and destroy. • Lymph nodes may swell and become tender during antibody production. • Lymphocytes flow from the nodes into the blood stream. • Lymphocytes attacking a cancer cell