What is the primary function of the myenteric plexus?
ARegulating GI secretion
BRegulating local blood flow
CRegulating motility
DRegulating absorption
A male infant presented with distension of abdomen shortly after birth with delayed passage of meconium. Subsequently a full-thickness biopsy of the rectum was performed. The rectal biopsy is likely to show:
ALack of ganglion cells
BFibrosis of submucosa
CThickened muscularis propria
DHyalinization of the muscular coat
The strongest and thickest layer of the esophagus is
AMuscularis
BMucosa
CSubmucosa
DAdventitia
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