Reference no: EM133401416

Question: The body has very specifically programmed approaches to avoiding infection, healing injured structures, and maintaining cellular health. The combined yet unique forces of immunity, inflammation, and apoptosis provide for that critical innate defense.  provide and demonstrate understanding of these key concepts.

1. When a foreign substance enters the body, often the body must take protective action.
   1. What is the definition of an antigen?
   2. What is the chief function of an antibody?
   3. Describe briefly what an antigen-antibody reaction is. 
   4. What are T and B lymphocyte cells, where do they mature, and what are their functions? 
   5. What happens if the T cell is not properly regulated?
2. Inflammation has a very vital function in homeostasis.
   1. What are the three purposes?
   2. Describe healthy inflammation in physiological terms. 
   3. How does that differ from an immune response?
3. Cellular damage can be classified as reversible or irreversible. 
   1. Which two electrolytes are involved in hydropic swelling? 
   2. Describe one type of irreversible damage. 
4. Figure 4.6 of your textbook depicts a normal cell and five adaptive processes the body takes as a response to physiological stress.
   1. What is the trigger for metaplasia? Is there a related risk for cancer? Why or why not?
   2. What is different between metaplasia and dysplasia? How might apoptosis help reduce the risk for cancer in dysplasia?
5. Critical Thinking Exercise: President Lincoln is suspected to have had Marfan Syndrome. The Marfan Foundation website exists to educate and provide support to the lay public on that genetic connective tissue disease. It is written to provide education and hope for those associated with the disease. It is written to provide education and hope for those associated with the disease. Click on and review the information under the Cardiovascular tab in the Key Features section of the website. (To find this section, click on "Key Features" in the red menu bar.) Note the careful wording of the information so that individuals with varying levels of medical knowledge can understand the content. Then, in a brief paragraph, explain the risks associated with using these types of sources written for the lay public when completing academic assignments.