The vocal tract is that cavity in animals and
humans, where sound that is produced at the sound source
in mammals; syrinx
in birds) is filtered. In birds
it consists of the trachea,
the oral cavity, the upper part of the esophagus,
and the beak.
it consists of the laryngeal cavity, the pharynx,
the oral cavity, and the nasal cavity, and in some nonhuman
mammals maybe also the airsacs.
| Sagittal section of human vocal tract