Licence: Public Domain Mark
Credit: The mouth and the teeth / by J.W. White. Source: Wellcome Collection.
Provider: This material has been provided by the Francis A. Countway Library of Medicine, through the Medical Heritage Library. The original may be consulted at the Francis A. Countway Library of Medicine, Harvard Medical School.
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![DIAGRAM OF FOOD AND AIR TRACTS. \ The solid line through Mouth and Gullet represents the course taken by food and drink; the dotted lines through Mouth, Nasal Passages, and Air-Tube represent the course taken by the air. [From Cohen on Throat and Voice.']](https://iiif.wellcomecollection.org/image/b21084099_0012.jp2/full/800%2C/0/default.jpg)