N5315 Test 2 questions with correct answers

N5315 Test 2 questions with /| /| /| /| /|




correct answers /|




What do CD4/helper T cells do? - CORRECT ANSWERS ✔✔Activate
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macrophages, B-cells, cytotoxic T-cells, and other CD4 cells
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What is released by Th1 and what does it do? - CORRECT
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ANSWERS ✔✔Releases IL2 and activates cytotoxic Tcells
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What does CD4 bind to? - CORRECT ANSWERS ✔✔MCHII
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What is released by Th2 and what does it do? - CORRECT
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ANSWERS ✔✔Releases IL4 and binds to B cells and activates them
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What does CD8 bind to? - CORRECT ANSWERS ✔✔MHC1
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Humoral immunity involves what cells? - CORRECT ANSWERS
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✔✔B cells
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Cell Mediated Immunity involves what cells? - CORRECT ANSWERS
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✔✔T cells
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Active acquired immunity - CORRECT ANSWERS ✔✔results from
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actual exposure to a pathogen
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,Passive acquired immunity - CORRECT ANSWERS ✔✔Does not
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involve the host's immune response. Transferred to recipient
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- immediate, short lived immune response
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- only last a few months
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Antigen - CORRECT ANSWERS ✔✔a toxin or other foreign
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substance that induces an immune response in the body. Can /| /| /| /| /| /| /| /| /| /|



react with antibodies or antigen receptors on B and T cells
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What do plasma cells do? - CORRECT ANSWERS ✔✔produce
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antibodies


IgG - CORRECT ANSWERS ✔✔-Most common antibody
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-Binds with viruses, bacteria, toxins, and macrophages
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-Primary antibody in SECONDARY immune response/| /| /| /| /|




-Only antibody that crosses placenta
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IgE - CORRECT ANSWERS ✔✔-Binds to mast cells, eosinophils, and
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basophils
-parasitic infections and hypersensitive reactions /| /| /| /|




-allergies/allergens


IgM - CORRECT ANSWERS ✔✔-Main immune globulin produced in
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early PRIMARY immune response.
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-High levels indicate recent infection
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, IgA - CORRECT ANSWERS ✔✔-Main immune globulin found in
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secretions and mucous membranes.
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-Prevents invaders from attaching to mucous membranes
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IgD - CORRECT ANSWERS ✔✔-Signals B-cell activation
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-Found on the surface of B-lypmhocytes
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Mast cells - CORRECT ANSWERS ✔✔Release histamines,
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leukotrienes, prostaglandins, platelet-activating factor,
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chemotatic factors, and cytokines /| /| /|




Histamine 1 - CORRECT ANSWERS ✔✔-Promote inflammation
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-Found on smooth muscles cells
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*broncoconstriction


Histamine - CORRECT ANSWERS ✔✔-responsible for causing
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vasodilation
-increases vascular permeability
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-increases blood flow to the site of injury
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-->erythema and swelling of site
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Histamine 2 - CORRECT ANSWERS ✔✔-Anti-inflammatory;
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supresses leukocyte function
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-Found in the stomach mucosa, induce secretion of gastic acid
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