Figure 16 - Effects of belching on the UES closure muscles.

From the following article

Upper esophageal sphincter

Ivan M. Lang

GI Motility online (2006)



Belching was activated by the injection of air (50 mL) into the stomach of a chronically instrumented dog. Note that belching is associated with inhibition of both the TP and CP during the belch. TP, thyropharyngeus, CP, cricopharyngeus; ESO, esophagus 1 cm below CP; L, longitudinally oriented electrodes; C, circularly oriented electrodes.

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