Iliocostalis lumborum muscle
Musculus iliocostalis lumborum
- Related terms: Iliocostalis lumborum muscle (Erector spinae muscles)
Definition
Origin: Pelvic surface of the wing of the ilium, iliac crest and intermuscular septum.
Insertion: Tenth through thirteenth ribs.
Action: Fixation of the vertebral column or lateral movement when only one side contracts; aids in expiration by pulling the ribs caudally.
Nerve: Dorsal branches of the thoracales and lumbales.
References
Text by Antoine Micheau, MD - Copyright IMAIOS
