Iliocostalis lumborum - Musculus iliocostalis lumborum


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.

Text by Antoine Micheau, MD - Copyright IMAIOS


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