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Author Question: A patient has a delayed-type hypersensitivity response to an infection. The nurse understands that ... (Read 76 times)

Jkov05

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on: Jul 23, 2018
A patient has a delayed-type hypersensitivity response to an infection. The nurse understands that which two types of cells are necessary for this response?
 
  a. Antigen-presenting cells and mast cells
  b. Cytolytic T lymphocytes and target cells
  c. Immunoglobulin cells and dendritic cells
  d. Infected macrophages and CD4 helper T cells

Question 2

A nurse is teaching a group of nursing students about antibodies. The nurse correctly explains that which type of response is triggered when antigens bind to antibodies on mast cells or basophils?
 
  a. Acquired immune response
  b. Autoimmune response
  c. Hypersensitivity reaction
  d. Transplant rejection


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lin77x

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Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: D
The object of delayed-type hypersensitivity is to rid the body of bacteria that replicate within macrophages. The macrophage activates the CD4 cell, which in turn activates the macrophage. The other cells listed are not a part of this response.

Answer to Question 2

ANS: C
When antigens bind to antibodies on mast cells and basophils, chemical mediators of hypersensitivity reactions are released. Although hypersensitivity is an acquired response, mast cells and basophils do not play a role in other acquired responses. An autoimmune response occurs when the immune system fails to discriminate between self and nonself. Transplant rejection occurs when the MHC molecules of the donor are different from those of the patient.


Jkov05

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Reply 2 on: Jul 23, 2018
Gracias!

matt95

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

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