Neutrophils:
A) are phagocytic cells.
B) produce histamine.
C) produce antibodies.
D) are elevated during an allergic response. - ANSA
Which cells are required to process and present antigens from foreign material as the initial step
in the immune response?
A) T-helper cells
B) Macrophages
C) Eosinophils
D) Monocytes - ANSB
Humoral immunity is mediated by:
A) natural killer cells.
B) T lymphocytes (T cells).
C) B lymphocytes (B cells).
D) neutrophils. - ANSC
A secondary immune response differs from the primary immune response in that:
A) it is more rapid than the primary response and results in higher antibody levels.
B) it is slower than the primary response and doesn't change the antibody levels.
C) it occurs at the same time as the primary response but results in a decrease in antibodies.
D) it only occurs in hyperallergic reactions and results in a decrease of antibodies. - ANSA
Which type of immunity is provided by a vaccination?
A) Active natural
B) Active artificial
C) Passive natural
D) Passive artificial - ANSB
When an allergen binds with IgE antibodies on mast cells, resulting in release of chemical
mediators, this reaction is called:
A) cytotoxic hypersensitivity.
B) immune complex hypersensitivity.
C) type I hypersensitivity.
D) type IV hypersensitivity. - ANSC
The role of memory cells is to:
A) change into an antibody-secreting cell following activation.
, B) immediately secrete antibodies following the first exposure to antigen.
C) recognize the antigen and stimulate the immune response.
D) bind complement to the antibody. - ANSC
Which statement applies to contact dermatitis?
A) It occurs when IgE antibodies on the skin react with the causative substance.
B) It may result from ingested foods.
C) Urticaria (hives) gradually spread over the body.
D) A type IV reaction occurs in affected areas. - ANSD
Which of the following causes anaphylaxis?
A) A severe, systemic allergic reaction
B) Type III hypersensitivity
C) Cell-mediated hypersensitivity
D) Immune complex deposits in many tissues - ANSA
Following a positive HIV antibodies blood test and ELISA test, what is the test commonly used
for confirmation?
A) Agglutination
B) Double immunodiffusion test
C) Western blot test
D) Sedimentation rate test - ANSC
Incompatible blood transfusions result in:
A) hemolysis of erythrocytes.
B) a type I immune response.
C) deposits in multiple organs.
D) immune deficiency. - ANSA
An autoimmune disease is:
A) excessive formation of antibodies following exposure to foreign material.
B) an extreme response to normally harmless material in the environment.
C) an abnormal response to ingested food and drugs.
D) failure of the immune system to distinguish self from nonself. - ANSD
Systemic lupus erythematosus is caused by:
A) a chronic allergic condition.
B) development of an immune-deficient state.
C) a deficiency of T lymphocytes.
D) immune complex deposits of antinuclear antibodies. - ANSD
Distinguishing clinical features of systemic lupus erythematosus include:
A) inflammation in multiple organs.
B) lack of a specific diagnostic blood test.