esophagus in dogs

Tube that connects the pharynx to the stomach. In mammals, the oesophagus connects the buccal cavity with the stomach. The stratified squamous non-keratinised epithelium lining the buccal cavity is continued through the pharynx down into the oesophagus. The lowest part of the oesophagus (ca. 2 cm) is lined with gastric mucosa and covered by peritoneum. The main body of the oesophagus is lined with small, simple mucous glands. Each gland opens into the lumen by a long duct which pierces the muscularis mucosae (Wilson and Washington, 1989). A sphincter is situated at the point where the oesophagus enters the stomach to prevent gastro-oesophageal reflux, i.e. to prevent acidic gastric contents from reaching stratified epithelia of the oesophagus, where they can cause inflammation and irritation (Wilson and Washington, 1989; Brown et al., 1993). Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the esophagus is

Tube that connects the pharynx to the stomach. In mammals, the oesophagus connects the buccal cavity with the stomach. The stratified squamous non-keratinised epithelium lining the buccal cavity is continued through the pharynx down into the oesophagus. The lowest part of the oesophagus (ca. 2 cm) is lined with gastric mucosa and covered by peritoneum. The main body of the oesophagus is lined with small, simple mucous glands. Each gland opens into the lumen by a long duct which pierces the muscularis mucosae (Wilson and Washington, 1989). A sphincter is situated at the point where the oesophagus enters the stomach to prevent gastro-oesophageal reflux, i.e. to prevent acidic gastric contents from reaching stratified epithelia of the oesophagus, where they can cause inflammation and irritation (Wilson and Washington, 1989; Brown et al., 1993). The atlas records it as a organ at the organ scale in the dog.

Where the esophagus is

It sits within the digestive system. Positioned deliberately as part of this species body plan.

What the esophagus connects to

The atlas records 29 typed relationships for it, across 8 kinds of connection. part of digestive tract, organ and upper digestive tract.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the esophagus. Only a minority of structures carry those edges here, so an empty answer means nothing has been recorded — not that there is nothing to record.

Also called

Also recorded as gullet and oesophagus. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001043, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: digestive tract, organ and upper digestive tract.
• A kind of: anatomical structure, digestive system element and organ.
• contains: epithelium of esophagus, esophagus mucosa, esophagus muscle, esophagus muscularis mucosa, esophagus secretion and esophagus skeletal muscle, and 10 more.
• flows to: stomach and chordate pharynx.
• contributes to morphology of: epithelium of esophagus and smooth muscle of esophagus.
• Develops from: foregut.
• Continuous with: cardia of stomach.
• transports: esophageal hiatus.

Questions

Where is the esophagus?

It sits within the digestive system. Positioned deliberately as part of this species body plan.

What does the esophagus connect to?

Part of: digestive tract, organ and upper digestive tract.

Is the esophagus the same in other species?

This page describes the dog. The human record of the same structure sits beside it on /compare, over one shared model rather than two atlases built separately.