pyloric sphincter

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 human body.

Where the pyloric sphincter is

It sits within the muscular and digestive systems. Positioned deliberately as part of this species body plan.

What the pyloric sphincter connects to

The atlas records 8 typed relationships for it, across 5 kinds of connection. part of alimentary part of gastrointestinal system, digestive 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, digestive system and pylorus.
• A kind of: organ and sphincter muscle.
• 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. Positioned deliberately as part of this species body plan.

What does the pyloric sphincter connect to?

Part of: alimentary part of gastrointestinal system, digestive system and pylorus.

Is the pyloric sphincter 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.