Gastrointestinal Tract and Glands 315206.Hirschsprung’s disease and Chagas’ disease result in disturbance of
intestinal motility. The site of this disruption is most likely which of the lay-
ers on the accompanying micrograph?
a. Layer a
b. Layer b
c. Layer c
d. Layer d
e. Layer e
(Micrograph courtesy of Dr. John K.Young.)