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NUR228 – HYPERSENSITIVITY Questions & 100% Correct Answers

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What is hypersensitivity? ~~> Normal immune response that is Inappropriately triggered OR Excessive (overproducing) OR Produces undesirable effects on the body What are the basic triggers of hypersensitivity? ~~> Antigen-antibody reaction or antigen-lymphocyte interaction. ...

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  • September 12, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NUR228
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1 | P a g e | © copyright 2024/2025 | Grade A+




NUR228 – HYPERSENSITIVITY Questions &
100% Correct Answers
What is hypersensitivity?

✓ ~~> Normal immune response that is

✓ Inappropriately triggered

✓ OR

✓ Excessive (overproducing)

✓ OR

✓ Produces undesirable effects on the body




What are the basic triggers of hypersensitivity?

✓ ~~> Antigen-antibody reaction or antigen-lymphocyte interaction.




What are the four types of hypersensitivity?

✓ ~~> Types I, II, III (mediated by antibodies produce by B cells that

when activated become plasma cells)




Type IV (mediated by T cells)




Which types of hypersensitivity are mediated by antibodies?


Master01 | September, 2024/2025 | Latest update

, 2 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> Types I, II, III.




Which types of hypersensitivity are mediated by T cells?

✓ ~~> Type IV.




What is Type I Hypersensitivity?

✓ ~~> Immediate reaction after sensitization to an antigen.




What are some examples of antigens?

✓ ~~> Environmental (pet dander, bee stings), Foods (nuts, seafood,

eggs), Medications (penicillin, contrast dye).




What is the etiology of Type I Hypersensitivity?

✓ ~~> Genetic link, with a higher chance if one or both parents are

allergic.




What cells are involved in Type I Hypersensitivity?

✓ ~~> B lymphocytes produce antibodies (IgE), which attach to mast

cells.




What is the role of mast cells in Type I Hypersensitivity?



Master01 | September, 2024/2025 | Latest update

, 3 | P a g e | © copyright 2024/2025 | Grade A+



✓ ~~> Mast cells circulate around the body and are part of the

immune system.




What are the clinical manifestations of potent vasodilation?

✓ ~~> Stuffy nose, Lower blood pressure, Wheals on skin




What are the clinical manifestations of increased vascular permeability?

✓ ~~> Edema, Runny nose




What are the clinical manifestations of bronchial smooth muscle constriction?

✓ ~~> Breathing difficulties, Wheezing




What is the clinical manifestation of stimulating irritant receptors?

✓ ~~> Itching (pruritis)




What are atopic reactions?

✓ ~~> Inherited tendency to become sensitive to allergens.




What are some examples of atopic reactions?

✓ ~~> Allergic rhinitis, asthma, urticaria.




Master01 | September, 2024/2025 | Latest update

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