pylorus

The stomach tissue region surrounding and controlling the distal outlet of the stomach, which opens into the duodenum. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the pylorus is

The stomach tissue region surrounding and controlling the distal outlet of the stomach, which opens into the duodenum. The atlas records it as a organ at the organ scale in the human body.

Where the pylorus is

It sits within the digestive system. 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 pylorus connects to

The atlas records 13 typed relationships for it, across 4 kinds of connection. a kind of zone of stomach.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the pylorus. 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 pars pylorica, pars pylorica gastricae, pyloric part of stomach, pyloric region, stomach pyloric region and valvula pylori. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001166, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• A kind of: zone of stomach.
• contains: pyloric antrum, pyloric canal, pyloric gastric gland, mucosa of pylorus, pyloric sphincter and submucosa of pylorus.
• contributes to morphology of: stomach, pyloric antrum, pyloric canal, pyloric gastric gland and pyloric sphincter.
• Continuous with: duodenum.

Questions

Where is the pylorus?

It sits within the digestive system. 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 pylorus connect to?

A kind of: zone of stomach.

Is the pylorus 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.