Figure 12 - Response of UES muscles during swallowing.

From the following article

Upper esophageal sphincter

Ivan M. Lang

GI Motility online (2006)



This figure illustrates the EMG responses of the three UES closure muscles, and many of the superior hyoid UES opening muscles during a dry swallow ad lib feeding of canned food in a chronically instrumented dog. Note that the three UES closing muscles respond quite differently during swallowing but the superior opening muscles are activate almost simultaneously. MH, mylohyoideus; GH, geniohyoideus; TH, thyrohyoideus; TP, thyropharyngeus; CP, cricopharyngeus; ESO, esophagus 2 cm below CP.

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