Lower Esophageal Sphincter

It has been known since the beginning of the century that the esophagogastric junction is normally closed at

Figure 2-10 A, Pressure profile of esophageal peristalsis along the esophagus of normal humans as measured by direct intraesophageal transducers. (LES, lower esophageal sphincter.) B, Esophageal wave velocity in the human esophageal body. (From Humphries, T.J., and Castell, D.O.: Pressure profile of esophageal peristalsis in normal humans as measured by direct intraesophageal transducers. Digest. Dis., 22:641, 1977, with permission.)

Figure 2-10 A, Pressure profile of esophageal peristalsis along the esophagus of normal humans as measured by direct intraesophageal transducers. (LES, lower esophageal sphincter.) B, Esophageal wave velocity in the human esophageal body. (From Humphries, T.J., and Castell, D.O.: Pressure profile of esophageal peristalsis in normal humans as measured by direct intraesophageal transducers. Digest. Dis., 22:641, 1977, with permission.)

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