Related Experiment Video
Updated: May 7, 2026

Fabrication and Implantation of Miniature Dual-element Strain Gages for Measuring In Vivo Gastrointestinal Contractions in Rodents.
Published on: September 18, 2014
Abstract:
This study was prompted by a clinical association noted between reflux oesophagitis and upper oesophageal disorders. Patients with reflux oesophagitis have been shown to have a significantly raised resting cricopharyngeal pressure. Patients with reflux oesophagitis (36%) complaining of dysphagia localized to the throat also had a high resting cricopharyngeal pressure. Successful repair of a hiatus hernia restored the cricopharyngeal pressure to within the normal range. Four of the five patients studied who had a pharyngeal pouch also had a raised cricopharyngeal pressure.
Related Concept Videos
Esophagus
The movement of edibles from the pharynx into the esophagus is facilitated by the upper esophageal sphincter, which is formed primarily by the...
Intestinal Phase of Digestion
The arrival of the chyme in the small intestine distends the duodenum, which triggers the enterogastric reflex. This distension...
Mucosal Barrier of the Stomach
Within parietal cells, carbonic acid is first formed through the reaction of water and carbon dioxide. The dissociation of carbonic acid releases bicarbonate and hydrogen ions. The bicarbonate...
Gastric Motility
Peristaltic Waves and Chyme Formation
Upon food entry, the stomach initiates...
Physiology of the Gastrointestinal System I: Ingestion and Propulsion
Gastroesophageal Reflux Disease

