The oral cavity, bound by the cheeks of the face, the palate, and the flesh of the mandible, opening onto the mouth and the fauces, and containing the teeth, tongue, gums, and other structures.
The first part of the stomodaeum, lying just within the mouth; its dilator muscles arising on the clypeus, and inserted before the frontal ganglion and its connectives.
The narrow passage from the mouth to the pharynx, situated between the soft palate and the base of the tongue.
That portion of the interior of a spiral shell which can be seen by looking into the aperture.
The throat of a calyx, corolla, etc.