30 Questions
What type of hypersensitivity reaction is associated with an immediate response?
Type I
Which autoimmune disease involves the immune system attacking the myelin sheath of nerve cells?
Multiple sclerosis
Which type of hypersensitivity reaction is characterized by immune complex deposition?
Type III
What type of antibody is involved in Type II hypersensitivity reactions?
IgG
Autoimmune hemolytic anemia is an example of which type of hypersensitivity reaction?
Type II
Which autoimmune disease involves antibodies attacking the acetylcholine receptors at the neuromuscular junction?
Myasthenia gravis
What is a hypersensitivity reaction?
An inappropriate immune response to a harmless substance.
What type of hypersensitivity reaction is an allergic reaction?
Type I hypersensitivity
What is an autoimmune disease?
A hypersensitivity reaction targeted at the body's own tissues.
What is an example of a Type A adverse reaction?
Morphine causing drowsiness.
What is anaphylaxis?
A severe allergic reaction with systemic features.
What is the difference between hypersensitivity and allergy?
Allergy is a specific type of hypersensitivity reaction.
What key immune components are involved in type III hypersensitivity reactions?
IgM and IgG antibodies
Which type of antibodies form immune complexes in type III hypersensitivity reactions?
IgG antibodies
Where do immune complexes deposit in type III hypersensitivity reactions?
Small blood vessels
What type of damage can immune complexes cause in type III hypersensitivity reactions?
Renal damage
Which disease is an example of a type III hypersensitivity reaction?
Systemic lupus erythematosus
What type of cells are involved in type IV hypersensitivity reactions?
T cells
What type of immune reaction is hypersensitivity reaction?
Type B
Which of the following is an example of a genetic variability causing oxidative crises?
G6PD deficiency
What key immune components are involved in Type I hypersensitivity reactions?
Mast cells
What is a common clinical feature associated with Type I hypersensitivity reactions?
Angioedema
In Type II hypersensitivity reactions, what consequences depend entirely upon the tissue targeted and antibody binding?
Signs of anemia
In organ transplant rejection, what plays a role similar to antibody-dependent cytotoxicity seen in Type II hypersensitivity reactions?
Complement activation
Which type of hypersensitivity reaction is characterized by IgE-mediated mast cell activation?
Type I
What is the key feature of type II hypersensitivity reactions?
IgG antibody-mediated destruction
Which disease results from the immune destruction of insulin-producing cells?
Type I diabetes mellitus
What is the primary outcome of immune damage to myelin sheaths around nerves in multiple sclerosis?
Focal neurological symptoms
Which hypersensitivity reaction is characterized by immune complex-mediated tissue damage?
Type III
In which type of hypersensitivity reaction is T-cell-mediated destruction of host cells a key mechanism?
Type IV
Explore definitions and examples of hypersensitivity and allergic reactions in immunology. Learn about inappropriate immune responses to environmental stimuli or host antigens. Understand the distinction between hypersensitivity reactions and allergic reactions.
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