exercise_immune_topic_1

exercise_immune_topic_1 - adaptive defenses 8 Name the four...

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The Immune System: Immune System Overview 1. Name the two major functions of the immune system: • _______________________________________ • _______________________________________ 2. Pathogens are classified according to their size and where they are located in the body. List the five types of pathogens from largest to smallest: • __________________________ • __________________________ • __________________________ • __________________________ • __________________________ 3. Which type of pathogen is always intracellular? ________________ Which type of pathogen is always extracellular? ________________ 4–5. Name the three main lines of defense and give an example of each: Line of defense Example 6. When the surface barriers (innate external defenses) are penetrated, what is the next line of defense? ___________________________ 7. This defense mechanism (named in question 6) identifies enemies by recognizing ____________ unique to the pathogens. When they are overwhelmed, they secrete __________________ to mobilize the
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Unformatted text preview: adaptive defenses. 8. Name the four key ways adaptive defenses differ from innate defenses: • __________________________ • __________________________ • __________________________ • __________________________ 9. B and T lymphocytes recognize pathogens by binding to them. What the lymphocyte recognizes is called the __________________ found on the antigen. 10. Specific B cells called _________ cells secrete ______________, which bind to the antigens. Humoral Versus Cellular Immunity 11. ____________ immunity is directed against pathogens in the extracellular fluid. This immunity involves ___ lymphocytes. 12. ____________ immunity is directed against pathogens within the cells. This immunity involves ___ lymphocytes. 13. Which type of immunity involves antibodies? _______________ 14. Name three circumstances in which the T cells would be activated against body cells: • ____________________________ • ____________________________ • ____________________________...
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This note was uploaded on 02/22/2009 for the course BIO 203 taught by Professor Johncabot during the Spring '08 term at SUNY Stony Brook.

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exercise_immune_topic_1 - adaptive defenses 8 Name the four...

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