Directions: For this assignment you will need to read three short articles about the human immune system: Overview of the Immune System, Features of an Immune Response, Lymphocytes, and Immunity: Natural and Acquired.  Read each article and answer the questions that appear below the article links.  Answer the questions on a separate sheet of paper or Word Doc.

Articles

1. Overview of the Immune System
   1. Describe what the immune systems does.
   2. Explain what happens if the immune system does not respond enough or responds too much to a threat.
2. Features of an Immune Response
   1. Compare innate and adaptive immunity.
3. Lymphocytes
   1. Define lymphocyte.
   2. Explain the function of lymphocytes.
4. Immunity: Natural and Acquired
   1. Explain, using an example, the difference between natural and acquired immunity.