quadratus lumborum

(redirected from musculus quadratus lumborum [NA6])

quadratus lumborum

An abdominal muscle located at the iliac crest, iliolumbar ligaments, transverse processes of lower lumbar vertebrae.

Action
Abduction of trunk.
 
Nerve
Ventral branches of upper lumbar spinal nerves.

Insertion
12th rib, transverse processes of upper lumbar vertebrae.
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