During the stay in the maternity hospital, the
newborn has a problem. The meconium does not pass (meconium is the first
content of the intestine to be passed during the first 1-2 days). After
examination, the so-called Hirschsprung disease (megacolon congenitum) is
proven. This disease is caused by abnormal innervation of the intestine,
affecting the internal anal sphincter and various lengths of adjacent colon.
Both the plexus myentericus Auerbachi and the plexus submucosus
Meissneri are absent in the affected section of bowel. The aganglionic
section is permanently contracted (lacking inhibitory neurons) and causes
functional obstruction. The healthy intestine above it dilates and
hypertrophies to form megacolons. Where would we locate the plexus myentericus
within the wall?

Question

During the stay in the maternity hospital, the
newborn has a problem. The meconium does not pass (meconium is the first
content of the intestine to be passed during the first 1-2 days). After
examination, the so-called Hirschsprung disease  (megacolon congenitum)  is
proven. This disease is caused by abnormal innervation of the intestine,
affecting the internal anal sphincter and various lengths of adjacent colon.
Both the  plexus myentericus Auerbachi  and the  plexus submucosus
Meissneri  are absent in the affected section of bowel. The aganglionic
section is permanently contracted (lacking inhibitory neurons) and causes
functional obstruction. The healthy intestine above it dilates and
hypertrophies to form megacolons. Where would we locate the plexus myentericus
within the wall?

Answer

between the circular and longitudinal layers of
muscle

Answer

between the longitudinal muscle layer and the
serosa

Answer

between the lamina muscularis mucosae and the tunica
submucosa

Answer

between the tunica submucosa and the circular
layer of the muscle

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During the stay in the maternity hospital, the newborn has a problem. The meconi...

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