diaphragm

A thin musculomebranous barrier that separates the abdominal and thoracic cavities. Often used for breathing control. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the diaphragm is

A thin musculomebranous barrier that separates the abdominal and thoracic cavities. Often used for breathing control. The atlas records it as a muscle at the organ scale in the human body.

Where the diaphragm is

It sits in the thorax and trunk, within the muscular and respiratory systems. Positioned deliberately as part of this species body plan.

What the diaphragm connects to

The atlas records 28 typed relationships for it, across 13 kinds of connection. part of musculature of thorax, respiratory system and thoracic segment of trunk.

Supply and innervation

Arterial supply: musculo-phrenic artery and phrenic artery. Venous drainage: musculo-phrenic vein. Innervation: phrenic nerve.

Also called

Also recorded as diaphragm muscle, diaphragm of thorax, thoracic diaphragm, midriff and phren. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001103, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: musculature of thorax, respiratory system and thoracic segment of trunk.
• A kind of: muscle organ, skeletal muscle of trunk and trunk region element.
• Attaches to: coronary ligament of liver and suspensory ligament of duodenum.
• contains: arcuate ligament, central tendon of diaphragm, costal diaphragm, costodiaphragmatic recess, dome of diaphragm and esophageal hiatus, and 4 more.
• Supplied by: musculo-phrenic artery and phrenic artery.
• composed of: skeletal muscle tissue.
• Innervated by: phrenic nerve.
• functionally connected to: left lung.

Questions

Where is the diaphragm?

It sits in the thorax and trunk, within the muscular and respiratory systems. Positioned deliberately as part of this species body plan.

What does the diaphragm connect to?

Part of: musculature of thorax, respiratory system and thoracic segment of trunk.

Is the diaphragm 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.