mouth

The proximal portion of the digestive tract, containing the oral cavity and bounded by the oral opening. In vertebrates, this extends to the pharynx and includes gums, lips, tongue and parts of the palate. Typically also includes the teeth, except where these occur elsewhere (e.g. pharyngeal jaws) or protrude from the mouth (tusks). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the mouth is

The proximal portion of the digestive tract, containing the oral cavity and bounded by the oral opening. In vertebrates, this extends to the pharynx and includes gums, lips, tongue and parts of the palate. Typically also includes the teeth, except where these occur elsewhere (e.g. pharyngeal jaws) or protrude from the mouth (tusks). The atlas records it as a organ at the organ scale in the human body.

Where the mouth is

It sits within the digestive system. Only the system is known. The position shown carries almost no spatial information.

What the mouth connects to

The atlas records 49 typed relationships for it, across 10 kinds of connection. a kind of subdivision of digestive tract.

Supply and innervation

Innervation: trigeminal nerve.

Also called

Also recorded as regio oralis, adult mouth, cavital oralis, cavitas oris, cavum oris and mouth cavity, and 8 more. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0000165, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• A kind of: subdivision of digestive tract.
• Adjacent to: palatoglossal arch.
• contains: alveolar artery, buccal vestibule, epithelium of parotid gland, epithelium of submandibular gland, frenulum of lip and frenulum of tongue, and 31 more.
• develops into: premaxilla, tongue and upper lip.
• contributes to morphology of: lip and oral cavity.
• Develops from: future mouth.
• connects: digestive tract.
• bounding layer of: mouth mucosa.

Questions

Where is the mouth?

It sits within the digestive system. Only the system is known. The position shown carries almost no spatial information.

What does the mouth connect to?

A kind of: subdivision of digestive tract.

Is the mouth the same in other species?

Leumas holds the same relationship vocabulary for every species it carries, so where another dataset records this structure you can put the two side by side on /compare.