Immunity ppt

Term Meaning Pathogen A disease-causing organism, including bacteria, Antigen Molecule that stimulates an immune response Innate immune system Non-specific immune system Adaptive immune system Antigen-specific immune system Antibody Specialized Y-shaped protein that tags antigens for destruction B cells White blood cells that produce antibodies and aid in immunological memory T cells White blood cells specialized to assist B cells (helper T) and others directly kills infected cells (killer T) Humoral immunity Adaptive immune defense depending on the action of antibodies Cell-mediated Immunity Adaptive immune defense in which foreign cells are destroyed by T cells Virus Nonliving particle containing protein and DNA/RNA that can infect a living cell Vaccine A killed or weakened form of a pathogen that produces immunity when injected into the body An inflammatory response begins when a pathogen stimulates an increase in blood flow to the infected area. Blood vessels in that area expand, and white blood cells leak from the vessels to invade the infected tissue. These white blood cells, called phagocytes engulf and destroy bacteria. The area often becomes red, swollen, and painful during an inflammatory response. Specific immune responses are triggered by antigens. Antigens are usually found on the surface of pathogens and are unique to that particular pathogen. The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special ...

Your immune system is your body’s defense againstinfections and other harmfulinvaders. Without it, you would constantly get sick frombacteria or viruses. Your immune system is made up of special cells, tissues, and organs that work together to protect you. The lymph, or lymphatic, system is a major part of the immune system. It's a network of lymph nodes and vessels. Lymphatic vessels are thin tubes that branch, like blood vessels,throughout the body. They carry a clear fluid called lymph. Lymph contains tissue fluid, waste products, and immune system cells. Lymph nodes are small, bean-shaped clumps of immune system cells that are connected by lymphatic vessels. They contain white blood cells that trap viruses, bacteria, and other invaders, including cancer cells. White blood cells are the cells of the immune system. They are made in one of your lymph organs, the bone marrow. Other lymph organs include thespleen and thymus. What can go wrong with your immune system? When your immune system doesn't work the way it should, it is called an immune system disorder. You may: • Beborn with a weak immune system. This is called primary immune deficiency. • Get a disease that weakens your immune system. This is called acquired immune deficiency. • Have animmune system that is too active.This may happen with an allergic reaction. • Have animmune system thatturns against you. This is called autoimmune disease. Immune systemdisorders Here are some common examples: • Severe combined imm...

This interactive module introduces the anatomy of the immune system and walks through the timeline of a typical immune response. The timeline includes the differences between the first time a pathogen is encountered versus subsequent infections, including an explanation of how vaccines work. Different tabs, videos, images, questions, and a detailed glossary of terms allow this resource to be explored at varying levels of depth depending on the class. Refer to the “Educator Materials” for implementation suggestions. The accompanying worksheets guide students’ exploration. The “General Immunology” worksheet is a guided exploration of the Click & Learn. The “Immunotherapy” worksheet applies the content in the Click & Learn to cancer immunotherapy. The “Vaccine Research Extension” worksheet guides students through an optional research project on vaccines. The glossary and illustrations in the Click & Learn are also provided as slide decks; you may make copies of these slides and adapt them to your classroom. The “Resource Google Folder” link directs to a Google Drive folder of resource documents in the Google Docs format. Not all downloadable documents for the resource may be available in this format. The Google Drive folder is set as “View Only”; to save a copy of a document in this folder to your Google Drive, open that document, then select File → “Make a copy.” These documents can be copied, modified, and distributed online following the Terms of Use listed in the “Details...