perineum in dogs

Subdivision of trunk proper, which is demarcated from the pelvis by the inferior surface of the pelvic diaphragm and from the lower limbs by the perineofemoral lines; together with the thorax, abdomen, and pelvis, it constitutes the trunk[FMA]. Every claim on this page comes from the Leumas anatomy graph and carries its source.

What the perineum is

Subdivision of trunk proper, which is demarcated from the pelvis by the inferior surface of the pelvic diaphragm and from the lower limbs by the perineofemoral lines; together with the thorax, abdomen, and pelvis, it constitutes the trunk[FMA]. The atlas records it as a region at the region scale in the dog.

Where the perineum is

It sits in the trunk. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What the perineum connects to

The atlas records 11 typed relationships for it, across 4 kinds of connection. part of abdominal segment of trunk, anal region and anatomical entity, and 1 more.

Supply and innervation

This dataset asserts no arterial supply, venous drainage or innervation for the perineum. 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 perineal region and regio perinealis. Searching any of those names reaches this page.

Source

Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0002356, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.

• Part of: abdominal segment of trunk, anal region, anatomical entity and trunk.
• A kind of: anatomical structure and organism subdivision.
• contains: bulbospongiosus muscle, external anal sphincter, inferior rectal artery and perineal muscle.
• overlaps: lower part of vagina.

Questions

Where is the perineum?

It sits in the trunk. Only the region is known. The position shown is somewhere plausible inside it and nothing more.

What does the perineum connect to?

Part of: abdominal segment of trunk, anal region, anatomical entity and trunk.

Is the perineum 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.