Question 1

What component is responsible for the accumulation of lymphocytes in the blood during a whooping cough infection?

Accepted Answer

A)  Pertussis toxin
B)  Leukemoid reaction
C)  T lymphocytes
D)  VCA-IgGE) A) and D)
F) A) and C)

Question 2

The Epstein-Barr virus targets B cells that express _______.Once infected, they cause expression of the_______ marker.

Accepted Answer

A)  CD21; CD23
B)  CD23; CD21
C)  CD22; CD23
D)  CD34; CD19E) A) and B)
F) None of the above

Question 3

The prominent lymphocytosis in whooping cough is due to:

Accepted Answer

A)  An exacerbated immune response.
B)  Cell-mediated immunity accompanying a neutrophilia.
C)  Redistribution of lymphocytes from the lymphatics into peripheral circulation.
D)  Increased cytokine stimulation of lymphopoiesis in the bone marrow.E) A) and B)
F) All of the above

Question 4

A negative heterophile antibody test in a patient with symptoms of infectious mononucleosis could be due to what factor if the patient is being treated for cancer?

Accepted Answer

A)  Infection by another virus
B)  The level of the antibody is not high enough to be detected.
C)  Immunosuppressed antibody response
D)  CMV infectionE) A) and B)
F) A) and C)

Question 5

A 42-year-old HIV-positive patient recently was diagnosed with disseminated histoplasmosis.Which of the following should be ordered to monitor this patient's progression?

Accepted Answer

A)  HIV antibody screen
B)  HBsAg
C)  CBC
D)  CD4:CD8 ratioE) A) and D)
F) A) and B)

Question 6

A 5-year-old girl has a WBC count of 11 x 109/L with 55% lymphocytes.Which of the following best describes this phenomenon?

Accepted Answer

A)  Absolute lymphocytosis
B)  Relative lymphocytosis
C)  Normal leukocyte count
D)  Absolute lymphocytopeniaE) C) and D)
F) A) and B)

Question 7

A patient with infectious mononucleosis is having serologic blood tests.Results are as follows: EBVCA IgG: 1:320; EBVCA IgM: not detected; EBNA: 1:20.What stage of infection is the patient in?

Accepted Answer

A)  Acute
B)  Recent
C)  Past
D)  Cannot be determinedE) None of the above
F) All of the above

Question 8

Which of the following is expected to decrease as the HIV infection progresses into AIDS?

Accepted Answer

A)  WBC count
B)  CD4:CD8 ratio
C)  Lymphocyte count
D)  All of the aboveE) C) and D)
F) A) and D)

Question 9

CMV infections complicate transplants by which of the following mechanisms?

Accepted Answer

A)  Formation of antibodies to CMV infected cells which cross-react with stem cells
B)  Suppress normal immune function and elicit the formation of autoantibodies that are lymphocytotoxic
C)  Impair mitotic division of normal hematopoietic cells and stimulate neoplastic cells to proliferate
D)  Stimulate antibodies against RBCs resulting in an autoimmune hemolytic anemiaE) C) and D)
F) All of the above

Question 10

Which of the following cell types is commonly infected by the HIV-1 virus?

Accepted Answer

A)  Cytotoxic T cells
B)  CD8 cells
C)  CD4 cells
D)  NeutrophilsE) All of the above
F) A) and B)

Question 11

An 18-year old patient has a WBC count of 9 x 109/L and 60% lymphs, 30% neutrophils, 6% monocytes, 3% eosinophils and 1% basophils.The following best describes this condition:

Accepted Answer

A)  Relative and absolute neutrophilia.
B)  Absolute neutropenia and absolute lymphocytosis.
C)  Relative neutropenia and absolute lymphocytosis.
D)  Relative lymphocytopenia and relative neutropenia.E) A) and B)
F) C) and D)

Question 12

Which of the following statements best describes the pathogenesis of HIV infection?

Accepted Answer

A)  HIV virus selectively infects T helper cells, incorporates its own DNA into the DNA of the T helper, and lyses the cell.
B)  HIV virus infects all lymphocytes, incorporates its own DNA into the DNA of the T helper, and changes the identity of the T helper.
C)  HIV virus infects all cells involved in cell-mediated immunity, incorporates its own DNA into the DNA of the infected cells, and lyses the cells.
D)  HIV infects T-suppressor cells and initiates apoptosis.E) A) and C)
F) None of the above

Exam 19: Nonmalignant Lymphocyte Disorders

Which of the following is expected to decrease as the HIV infection progresses into AIDS?

Correct Answer
verified

The Epstein-Barr virus targets B cells that express _.Once infected, they cause expression of the_ marker.

Correct Answer
verified

What component is responsible for the accumulation of lymphocytes in the blood during a whooping cough infection?

Correct Answer
verified

A 42-year-old HIV-positive patient recently was diagnosed with disseminated histoplasmosis.Which of the following should be ordered to monitor this patient's progression?

Correct Answer
verified

A 5-year-old girl has a WBC count of 11 x 10⁹/L with 55% lymphocytes.Which of the following best describes this phenomenon?

Correct Answer
verified

The prominent lymphocytosis in whooping cough is due to:

Correct Answer
verified

A negative heterophile antibody test in a patient with symptoms of infectious mononucleosis could be due to what factor if the patient is being treated for cancer?

Correct Answer
verified

Which of the following statements best describes the pathogenesis of HIV infection?

Correct Answer
verified

CMV infections complicate transplants by which of the following mechanisms?

Correct Answer
verified

Which of the following cell types is commonly infected by the HIV-1 virus?

Correct Answer
verified

A patient with infectious mononucleosis is having serologic blood tests.Results are as follows: EBVCA IgG: 1:320; EBVCA IgM: not detected; EBNA: 1:20.What stage of infection is the patient in?

Correct Answer
verified

An 18-year old patient has a WBC count of 9 x 109/L and 60% lymphs, 30% neutrophils, 6% monocytes, 3% eosinophils and 1% basophils.The following best describes this condition:

Correct Answer
verified

Exam 19: Nonmalignant Lymphocyte Disorders

Which of the following is expected to decrease as the HIV infection progresses into AIDS?

Correct AnswerverifiedShow Answer

The Epstein-Barr virus targets B cells that express _______.Once infected, they cause expression of the_______ marker.

Correct AnswerverifiedShow Answer

What component is responsible for the accumulation of lymphocytes in the blood during a whooping cough infection?

Correct AnswerverifiedShow Answer

A 42-year-old HIV-positive patient recently was diagnosed with disseminated histoplasmosis.Which of the following should be ordered to monitor this patient's progression?

Correct AnswerverifiedShow Answer

A 5-year-old girl has a WBC count of 11 x 109/L with 55% lymphocytes.Which of the following best describes this phenomenon?

Correct AnswerverifiedShow Answer

The prominent lymphocytosis in whooping cough is due to:

Correct AnswerverifiedShow Answer

A negative heterophile antibody test in a patient with symptoms of infectious mononucleosis could be due to what factor if the patient is being treated for cancer?

Correct AnswerverifiedShow Answer

Which of the following statements best describes the pathogenesis of HIV infection?

Correct AnswerverifiedShow Answer

CMV infections complicate transplants by which of the following mechanisms?

Correct AnswerverifiedShow Answer

Which of the following cell types is commonly infected by the HIV-1 virus?

Correct AnswerverifiedShow Answer

A patient with infectious mononucleosis is having serologic blood tests.Results are as follows: EBVCA IgG: 1:320; EBVCA IgM: not detected; EBNA: 1:20.What stage of infection is the patient in?

Correct AnswerverifiedShow Answer

An 18-year old patient has a WBC count of 9 x 109/L and 60% lymphs, 30% neutrophils, 6% monocytes, 3% eosinophils and 1% basophils.The following best describes this condition:

Correct AnswerverifiedShow Answer

Correct Answer
verified

The Epstein-Barr virus targets B cells that express _.Once infected, they cause expression of the_ marker.

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

A 5-year-old girl has a WBC count of 11 x 10⁹/L with 55% lymphocytes.Which of the following best describes this phenomenon?

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified