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NUR 254 CHAP 38 Exam Questions with Complete Solutions Graded A+ $13.49   Add to cart

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NUR 254 CHAP 38 Exam Questions with Complete Solutions Graded A+

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  • NURS 254
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  • NURS 254

NUR 254 CHAP 38 Exam Questions with Complete Solutions Graded A+

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  • August 2, 2024
  • 6
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • NURS 254
  • NURS 254
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NUR 254 CHAP 38
Exam Questions
with Complete
Solutions Graded
A+
Denning [Date] [Course title]

, Allergy - Correct Ans: An inappropriate, often harmful response of the immune system to normally
harmless substances

Hypersensitive reaction to an allergen initiated by immunologic mechanisms that is usually mediated by
IgE antibodies



Allergen - Correct Ans: the substance that causes the allergic response



Atopy - Correct Ans: refers to the allergic reactions characterized by IgE antibody action and a genetic
predisposition



Immunoglobulins and Allergic Response - Correct Ans: Antibodies (IgE, IgD, IgG, IgM, and IgA) react with
specific effector cells and molecules and function to protect the body

IgE antibodies are involved in allergic disorders.

IgE molecules bind to an allergen and trigger mast cells or basophils.

These cells then release chemical mediators such as histamine, serotonin, kinins, SRS-A, and neutrophil
factor.

These chemical substances cause the reactions seen in allergic response.



Allergic Reaction - Correct Ans: Allergen triggers the B cell to make IgE antibody, which attaches to the
mast cell. When that allergen reappears, it binds to the IgE and triggers the mast cell to release its
chemicals.



Chemical Mediators - Correct Ans: Primary

Histamine

Eosinophil chemotactic factor of anaphylaxis

Platelet-activating factor

Prostaglandins

Secondary

Leukotrienes

Bradykinin

Serotonin

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