Figure 2 - Lateral view of bolus propulsion during swallowing.

From the following article

Oral, pharyngeal and esophageal motor function in aging

JoAnne Robbins, Allison Duke Bridges and Andrew Taylor

GI Motility online (2006)



a: Voluntary initiation of the swallow by tongue "loading." b: Bolus propulsion by tongue dorsum and UES opening anticipating bolus arrival. c: Bolus entry into the pharynx associated with epiglottal downward tilt, hyolaryngeal excursion, and UES opening. d, e: Linguapharyngeal contact facilitating bolus passage through (d) the pharynx and (e) the UES, and completion of oropharyngeal swallowing. Then the entire bolus is on the esophagus. (Source: Netter medical illustration used with permission of Elsevier.)

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