Lymphatic and immune system
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The lymphatic and immune systems protect the body from foreign agents. The document defines three key terms: antigens are foreign pathogens; antibodies are proteins that identify and neutralize antigens; and vaccination involves injecting a weakened pathogen to allow the body to develop antibodies and acquired immunity against that pathogen. In summary, the lymphatic and immune systems defend the body through antigens, antibodies that respond to antigens, and vaccination which stimulates acquired immunity.
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- 1. Lymphatic and Immune System
- 2. The lymphatic and immune system consist of very special functions that assist with protecting the body from foreign agents. Here you will learn 3 medical terms that give insight about protective functions within the two body systems
- 3. The first term is antigen An antigen is a pathogen or substance that the body recognizes as foreign. When the body recognizes a pathogen has made a invasion the immune response is then stimulated.
- 4. The second term is antibody An antibody is protein the body sends out in response to the antigens. The antibodies job is to identify and neutralize the foreign invader. In the event the body comes in contact with the same invader again the immune system will recognize it and the body will be immune. This is referred to as humoral immunity.
- 5. The final term is vaccination A vaccination is a method where a pathogen that has been weakened is injected into a person. This allows antibodies to familiarize themselves and protect the body from that specific pathogen in the future. This is called acquired immunity.
- 6. Review of terms • Antigen - Foreign pathogen • Antibody- Identifies and neutralizes pathogens • Vaccination- Weakened pathogen injected in to a host to acquire immunity
- 7. Thank You! E. Meredith