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University of Minnesota, Morris - BIOLOGY 222 CH17 1)First exposure to an allergen results in a violent hypersensitivity reaction

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University of Minnesota, Morris - BIOLOGY 222

CH17

1)First exposure to an allergen results in a violent hypersensitivity reaction.            

 

2. Anaphylaxis is the name given to allergic reactions caused by IgE-mediated release of mast cell granules.           

 

3. Generalized anaphylaxis may be quickly controlled with the use of antihistamines.             

 

 

4. Allergic rhinitis and hives may both respond to antihistamines.         

 

5. Type O blood is missing both anti-A and anti-B antibodies.     

 

6. Anti-A and anti-B antibodies are natural antibodies and are present at birth.           

 

7. Mismatch of either the Rh antigen or the AB antigen results in lysis of red blood cells by complement.     

 

8. Anti-Rh antibodies may not cross the placenta.           

 

9. MHC plays a pivotal role in transplant rejection.        

 

10. A lack of T cells makes one more vulnerable to intracellular parasites.