UNMC PATHO EXAM 2| NEW ACTUAL
EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT DETAILED
ANSWERS|EXCELLENT SCORES
Function of the immune system - correct-answer-1) to protect the body from
invasion by foreign antigens - foreign substances that trigger the immune
response
2) to identify and destroy potentially harmful cells
3) to remove cellular debris
What accomplishes the functions of the immune system? - correct-answer-
lymphoid organs & specifically designed lymphocytes through the process of
antibody-mediated immune response & cell-mediated immune response.
General types of immune alterations
- immune system acts inappropriately - correct-answer-1) Exaggerated
2) Misdirected against host's own cells
,3) Directed against beneficial foreign tissues
4) Deficiency / insufficient
What immune alterations are due to hypersensitivity reactions? - correct-answer-
1) Exaggerated
2) Misdirected against host's own cells
3) Directed against beneficial foreign tissues
Exaggerated - correct-answer-overreaction against environmental antigens
Allergic reaction = small
Anaphylactic reaction = same as allergic reaction, but bigger
Misdirected against host's own cells - correct-answer-autoimmunity = sees own
cells as being foreign & destroys them.
Directed against beneficial foreign tissues - correct-answer-isoimmunity = body's
immune reponse against beneficial foreign tissue - i.e. organ transplants
,Hypersensitivity - correct-answer-A pathologic immune response
An exaggerated AND inappropriate immune response
1) Exaggerated
2) Autoimmunity
3) Isoimmunity
Autoimmunity - correct-answer-Breakdown of that "code of recognition"
Body's immune system begins to recognize self as foreign
Autoimmunity
Etiology - correct-answer-Related To:
Genetics
Exposure to antigens - thought to alter membranes and the expression of self-
DNA, and induce this autoimmunity
Isoimmunity - correct-answer-Body's immune system reacts against tissues of
usually other members of the same species
i.e. organ transplant
, Types of Hypersensitivity - correct-answer-1) Type I - Allergy/Anaphylaxis
2) Type II - Tissue-specific reaction
3) Type III - Immune-complex mediated reactions
4) Type IV - Cell-mediated reactions
Hypersensitivity Type I - correct-answer-Allergy / Anaphylaxis
IgE-mediated allergic reactions
Hypersensitivity Type II - correct-answer-Tissue specific reaction
Blood Transfusion reaction
Hypersensitivity Type III - correct-answer-Immune-complex mediated reactions
Antigen-Antibody complexes form & deposit in tissues
i.e. Lupus
Hypersensitivity Type IV - correct-answer-Cell-mediated reactions
Involve T cells, macrophages
EXAM WITH 100% VERIFIED
QUESTIONS AND CORRECT DETAILED
ANSWERS|EXCELLENT SCORES
Function of the immune system - correct-answer-1) to protect the body from
invasion by foreign antigens - foreign substances that trigger the immune
response
2) to identify and destroy potentially harmful cells
3) to remove cellular debris
What accomplishes the functions of the immune system? - correct-answer-
lymphoid organs & specifically designed lymphocytes through the process of
antibody-mediated immune response & cell-mediated immune response.
General types of immune alterations
- immune system acts inappropriately - correct-answer-1) Exaggerated
2) Misdirected against host's own cells
,3) Directed against beneficial foreign tissues
4) Deficiency / insufficient
What immune alterations are due to hypersensitivity reactions? - correct-answer-
1) Exaggerated
2) Misdirected against host's own cells
3) Directed against beneficial foreign tissues
Exaggerated - correct-answer-overreaction against environmental antigens
Allergic reaction = small
Anaphylactic reaction = same as allergic reaction, but bigger
Misdirected against host's own cells - correct-answer-autoimmunity = sees own
cells as being foreign & destroys them.
Directed against beneficial foreign tissues - correct-answer-isoimmunity = body's
immune reponse against beneficial foreign tissue - i.e. organ transplants
,Hypersensitivity - correct-answer-A pathologic immune response
An exaggerated AND inappropriate immune response
1) Exaggerated
2) Autoimmunity
3) Isoimmunity
Autoimmunity - correct-answer-Breakdown of that "code of recognition"
Body's immune system begins to recognize self as foreign
Autoimmunity
Etiology - correct-answer-Related To:
Genetics
Exposure to antigens - thought to alter membranes and the expression of self-
DNA, and induce this autoimmunity
Isoimmunity - correct-answer-Body's immune system reacts against tissues of
usually other members of the same species
i.e. organ transplant
, Types of Hypersensitivity - correct-answer-1) Type I - Allergy/Anaphylaxis
2) Type II - Tissue-specific reaction
3) Type III - Immune-complex mediated reactions
4) Type IV - Cell-mediated reactions
Hypersensitivity Type I - correct-answer-Allergy / Anaphylaxis
IgE-mediated allergic reactions
Hypersensitivity Type II - correct-answer-Tissue specific reaction
Blood Transfusion reaction
Hypersensitivity Type III - correct-answer-Immune-complex mediated reactions
Antigen-Antibody complexes form & deposit in tissues
i.e. Lupus
Hypersensitivity Type IV - correct-answer-Cell-mediated reactions
Involve T cells, macrophages
