In Hirschsprung's disease the normal portion of the bowel:
a. becomes atrophied and shrinks c. becomes hypertrophied and dilated
b. loses function d. functions normally
C
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A Incorrect. In Hirschsprung's disease the normal portion of the bowel does not become atrophied and shrink.
B Incorrect. In Hirschsprung's disease the normal portion of the bowel does not lose function.
C Correct. In Hirschsprung's disease the normal portion of the bowel becomes hypertrophied and dilated. The affected bowel (absence of ganglion cells) is unable to transmit coordinated peristaltic waves and to pass fecal contents along its length, resulting in an accumulation of fecal material and distention proximal to the defect.
D Incorrect. In Hirschsprung's disease the normal portion of the bowel does not function normally.
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