jejunum in dogs

The portion of the small intestine that extends from the duodenum to the ileum. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the jejunum is

The portion of the small intestine that extends from the duodenum to the ileum. The atlas records it as a organ at the organ scale in the dog.

Where the jejunum is

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

What the jejunum connects to

The atlas records 13 typed relationships for it, across 8 kinds of connection. part of digestive tract, organ and small intestine.

Supply and innervation

Arterial supply: superior mesenteric artery. Venous drainage: jejunal vein.

Also called

Also recorded as intestinum jejunum, mid-intestine and middle intestine. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002115, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: digestive tract, organ and small intestine.
• A kind of: anatomical structure.
• contains: crypt of Lieberkuhn of jejunum, jejunal epithelium and jejunal mucosa.
• flows to: ileum and duodenum.
• contributes to morphology of: small intestine.
• Develops from: midgut.
• Drained by: jejunal vein.
• Supplied by: superior mesenteric artery.

Questions

Where is the jejunum?

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

What does the jejunum connect to?

Part of: digestive tract, organ and small intestine.

Is the jejunum 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.