GASTROINTESTINAL MoTILITY DISORDERS IN CHILDREN
GIHAN YOUSEF ALI YOUSEF;
Abstract
Motility is one of the most critical physiological function of the human gastrointestinal tract. For efficient assimilation of nutrients integration of adequate digestive, absorptive, and motor function is required.
Every region of the gut has its particular pattern of contractile activity that is related to its specific function.
In general motility through the gastrointestinal tmct begins with swallowing which is voluntary action that continued by reflex action mediated by sensory neurons to the swallowing center. Swallowing stimulate relaxation of the upper esophageal sphincter and initiation of primary peristalsis in the body of the esophagus. Lower esophageal sphincter relaxes when the peristaltic wave reaches the middle of the esophagus. A secondary peristalsis starts when the piimary peristalsis reaches the lower third of the esophagus.
The stomach acts as a reservoir and digestive organ. The mam motor functions of the stomach during feeding is to accommodate, mix, and empty the digested meal. During fasting migrating motor complex (MMC) o1iginate in the fundus and propagate downward to the terminal ileum. This MMC help in clearing digestive tract from residual food and prevent aboral migration of intestinal flora.
The organized motor activities known to exist in the small intestine are two basic contractile pattems, mixing and propulsion.
Every region of the gut has its particular pattern of contractile activity that is related to its specific function.
In general motility through the gastrointestinal tmct begins with swallowing which is voluntary action that continued by reflex action mediated by sensory neurons to the swallowing center. Swallowing stimulate relaxation of the upper esophageal sphincter and initiation of primary peristalsis in the body of the esophagus. Lower esophageal sphincter relaxes when the peristaltic wave reaches the middle of the esophagus. A secondary peristalsis starts when the piimary peristalsis reaches the lower third of the esophagus.
The stomach acts as a reservoir and digestive organ. The mam motor functions of the stomach during feeding is to accommodate, mix, and empty the digested meal. During fasting migrating motor complex (MMC) o1iginate in the fundus and propagate downward to the terminal ileum. This MMC help in clearing digestive tract from residual food and prevent aboral migration of intestinal flora.
The organized motor activities known to exist in the small intestine are two basic contractile pattems, mixing and propulsion.
Other data
| Title | GASTROINTESTINAL MoTILITY DISORDERS IN CHILDREN | Other Titles | اضرابات حركية الجهاز الهضمى فى الاطفال | Authors | GIHAN YOUSEF ALI YOUSEF | Issue Date | 1997 |
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