A 24-year-old woman presents with fever and painful, swollen ...

[appyboo]

A 24-year-old woman presents with fever and painful, swollen cervical lymph nodes. Her blood work indicates neutrophilia with a shift to the left. She most likely has
 
  A)
  a mild parasitic infection.
  B)
  a severe bacterial infection.
  C)
  a mild viral infection.
  D)
  a severe fungal infection.

Question 2

A client has been inhaling viruses periodically while on a cross-country flight. Which of the following situations listed below would most likely result in the stimulation of the client's T lymphocytes and adaptive immune system?
 
  A)
  Presentation of a foreign antigen by a familiar immunoglobulin
  B)
  Recognition of a foreign major histocompatibility complex (MHC) molecule
  C)
  Recognition of a foreign peptide bound to a self-major histocompatibility complex (MHC) molecule
  D)
  Cytokine stimulation of a T lymphocyte with macrophage or dendritic cell mediation

[kishoreddi]

Answer to Question 1

Ans:
B

Feedback:

Fever and painful, palpable lymph nodes are nonspecific inflammatory conditions; leukocytosis is also common but is a particular hallmark of bacterial infection. Neutrophilia also indicates a bacterial infection, whereas increased levels of other leukocytes would indicate other etiologies. The shift to the left--the presence of many immature neutrophils--indicates that the infection is severe, because the demand for neutrophils exceeds the supply of mature cells.

Answer to Question 2

Ans:
C

Feedback:

The stimulation of T cells requires the recognition of a foreign peptide bound to a self-major histocompatibility complex (MHC) molecule. Immunoglobulins do not play an antigen-presenting role, and foreign MHC molecules and cytokines do not stimulate the adaptive immune system.