Valves involved in the process of swallowing

Courtesy of Tessa Goldsmith, MA, CCC-SLP and Audrey Kurash Cohen, MS, CCC-SLP. Modified from: Dahlin CM, Cohen AK, Goldsmith T. Dysphagia, Xerostomia, and Hiccups. In: Oxford Textbook of Palliative Nursing, 3rd ed, Ferrell BR, Coyle N (Eds), Oxford University Press 2010.