Human Biology

1.61. Inflammatory Response http://www.ck12.org

• phagocyte: Type of white blood cell that ingests and destroys pathogens and dead cells.


• phagocytosis: Engulfing of a large particle, such as a pathogen, by the cell.

Summary

• If pathogens enter your body, inflammation occurs.


• White blood cells called phagocytes travel to areas of the body that are inflamed.

Practice

Use the resource below to answer the questions that follow.

• Our Immune Systemat http://www.youtube.com/watch?v=MI-BLaj5nFk (4:53)

MEDIA

Click image to the left for more content.

1. What is a macrophage? What does it do when it recognizes a "non-self" substance?


2. What are cytokines? What message do they send to the rest of the body’s cells?


3. How do macrophages interact with T-cells? Where does this interaction occur?

Review

1. Describe inflammation.


2. A fever is a sign of infection. Why might it be considered a good sign?