quadratus lumborum in dogs
An abdominal muscle that inserts on the last rib and transverse processes of lumbar vertebrae. It is irregular and quadrilateral in shape, and broader below than above. Every claim on this page comes from the Leumas anatomy graph and carries its source.
What the quadratus lumborum is
An abdominal muscle that inserts on the last rib and transverse processes of lumbar vertebrae. It is irregular and quadrilateral in shape, and broader below than above. The atlas records it as a muscle at the organ scale in the dog.
Where the quadratus lumborum is
It sits in the abdomen and trunk, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.
What the quadratus lumborum connects to
The atlas records 5 typed relationships for it, across 2 kinds of connection. a kind of muscle of abdomen and skeletal muscle organ, vertebrate.
Supply and innervation
This dataset asserts no arterial supply, venous drainage or innervation for the quadratus lumborum. 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 muscle of posterior abdominal wall. Searching any of those names reaches this page.
Source
Uberon multi-species anatomy ontology (Mungall et al.), CC BY 4.0. Term UBERON:0001220, version 2026-06-19, retrieved 2026-08-24. Licence: CC-BY-4.0.
- A kind of: muscle of abdomen and skeletal muscle organ, vertebrate.
- inserts into: lumbar vertebra, rib and transverse process of vertebra.
Questions
Where is the quadratus lumborum?
It sits in the abdomen and trunk, within the muscular system. Only the region is known. The position shown is somewhere plausible inside it and nothing more.
What does the quadratus lumborum connect to?
A kind of: muscle of abdomen and skeletal muscle organ, vertebrate.
Is the quadratus lumborum 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.