rectum
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 human body.
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 24 typed relationships for it, across 10 kinds of connection. part of large intestine, material anatomical entity and organism subdivision.
Supply and innervation
Arterial supply: inferior mesenteric artery. Innervation: inferior mesenteric nerve plexus.
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: large intestine, material anatomical entity and organism subdivision.
- A kind of: anatomical structure and subdivision of digestive tract.
- contains: epithelium of rectum, middle hemorrhoidal vein, mucosa of rectum, muscle layer of rectum, muscularis mucosae of rectum and rectal lumen, and 4 more.
- Continuous with: sigmoid colon and anal canal.
- flows to: anal canal and colon.
- contributes to morphology of: large intestine.
- superficial to: large intestine.
- Supplied by: inferior mesenteric artery.
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: large intestine, material anatomical entity and organism subdivision.
Is the rectum 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.