The throat of a calyx, corolla, etc.
That portion of the interior of a spiral shell which can be seen by looking into the aperture.
The narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue.
The part of the alimentary canal and respiratory tract that extends from the back of the mouth and nasal cavity to the larynx and esophagus.
The part of the alimentary canal immediately behind the mouth in invertebrates that may be thickened and muscular, eversible and toothed, or adapted as a suctorial organ.