rectum in dogs

The terminal portion of the intestinal tube, terminating with the anus. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the rectum is

The terminal portion of the intestinal tube, terminating with the anus. The atlas records it as a organ at the organ scale in the dog.

Where the rectum is

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

What the rectum connects to

The atlas records 15 typed relationships for it, across 9 kinds of connection. part of anal region, anatomical entity and digestive tract, and 2 more.

Supply and innervation

Arterial supply: inferior mesenteric artery.

Also called

Also recorded as terminal portion of intestine, intestinum rectum, rectal sac and terminal portion of large intestine. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001052, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: anal region, anatomical entity, digestive tract, large intestine and organ.
• A kind of: anatomical structure.
• Attaches to: anococcygeus muscle.
• flows to: anal canal and colon.
• contains: epithelium of rectum and mucosa of rectum.
• contributes to morphology of: large intestine.
• superficial to: large intestine.
• Continuous with: anal canal.

Questions

Where is the rectum?

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

What does the rectum connect to?

Part of: anal region, anatomical entity, digestive tract, large intestine and organ.

Is the rectum 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.