pyloric sphincter in dogs

A strong ring of smooth muscle at the end of the pyloric canal which lets food pass from the stomach to the duodenum. It receives sympathetic innervation from the celiac ganglion[WP]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the pyloric sphincter is

A strong ring of smooth muscle at the end of the pyloric canal which lets food pass from the stomach to the duodenum. It receives sympathetic innervation from the celiac ganglion[WP]. The atlas records it as a muscle at the organ scale in the dog.

Where the pyloric sphincter is

It sits within the muscular and digestive systems. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What the pyloric sphincter connects to

The atlas records 7 typed relationships for it, across 5 kinds of connection. part of alimentary part of gastrointestinal system and pylorus.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the pyloric sphincter. 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 pyloric valve. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001202, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: alimentary part of gastrointestinal system and pylorus.
• A kind of: digestive system element and muscle organ.
• Adjacent to: duodenum.
• Continuous with: pyloric canal.
• contributes to morphology of: pylorus.

Questions

Where is the pyloric sphincter?

It sits within the muscular and digestive systems. Not positioned individually, and containment is not asserted either. Drawn near structures of the same kind, which is a weak claim about location.

What does the pyloric sphincter connect to?

Part of: alimentary part of gastrointestinal system and pylorus.

Is the pyloric sphincter 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.