Figure 1 - Oropharyngeal swallowing mechanism.

From the following article

Oral, pharyngeal and esophageal motor function in aging

JoAnne Robbins, Allison Duke Bridges and Andrew Taylor

GI Motility online (2006)



The mechanism may be divided into two basic structural subsystems, horizontal and vertical, that mirror direction of bolus flow. (Source: Netter medical illustration used with permission of Elsevier. All rights reserved.)

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