Chapter 17

Question 1

Define an allergy

Answer 1

The immune reaction that results from immediate hypersensitivies in which an antibody-mediated immune response occurs within minutes of exposure to a usually harmless antigen

Question 2

Define and distinguish between the two hypersensitivities: Delayed and Autoimmune

Answer 2

Delayed: cell-mediated immune response that takes approximately 1-2 days after secondary exposure for a maximal reaction
Autoimmune: a hypersensitivity to self-antigens

Question 3

What is the spleen and what is its primary function?

Answer 3

Part of the lymphatic system that acts as a blood filter

Question 4

What is lymph?

Answer 4

The watery fluid that bathes tissues and organs and contains protective white blood cells but not red blood cells

Question 5

What is autoimmunity? What is an autoantibody?

Answer 5

Autoimmunity: a type of hypersensitivity to self-antigens