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Home Q & A Board Biology-Related Homework Help Medicine Nursing and Clinical
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ktay4160 ktay4160
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6 years ago
Cystic fibrosis (CF) may affect single or multiple systems of the body. What is the primary factor responsible for possible multiple clinical manifestations in CF?
 
  a. Hyperactivity of sweat glands
  b. Hypoactivity of autonomic nervous system
  c. Atrophic changes in mucosal wall of intestines
  d. Mechanical obstruction caused by increased viscosity of mucous gland secretions
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#1
6 years ago
ANS: D
The mucous glands produce a thick mucoprotein that accumulates and results in dilation. Small passages in organs such as the pancreas and bronchioles become obstructed as secretions form concretions in the glands and ducts. The exocrine glands, not sweat glands, are dysfunctional. Although abnormalities in the autonomic nervous system are present, it is not hypoactive. Intestinal involvement in CF results from the thick intestinal secretions, which can lead to blockage and rectal prolapse.
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