quadratus lumborum (muscle)

Type:Term

Definitions
1. flat muscle of posterior abdominal wall; origin, iliac crest, iliolumbar ligament, and transverse processes of lower lumbar vertebrae; insertion, twelfth rib and transverse processes of upper lumbar vertebrae; action, abducts trunk; nerve supply, ventral primary rami of upper lumbar spinal nerves.

Synonyms
musculus quadratus lumborum , lumbar quadrate muscle , quadrate muscle of loins

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