Figure 10 - Temporal relationship among UES pressure, trans-UES flow, and movement of the hyoid and larynx during 5-mL barium swallow.

From the following article

Upper esophageal sphincter

Ivan M. Lang

GI Motility online (2006)



The data are pooled from eight subjects. The brown bar indicates the period of UES opening when trans-UES flow of barium occurred. Note that the superior movement of the larynx and hyoid precede the drop in UES pressure and the anterior movement of the larynx and hyoid precede UES opening. (Source: Cook et al.,3 with permission of the American Physiological Society.)

Powerpoint slides for teaching

If the slide opens in your browser, Select "File > Save as" to save it.

Download PowerPoint slide (408K)