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Iliocostalis thoracis

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Iliocostalis thoracis

(Science: anatomy, muscle) origin, medial side of angles of lower six ribs; insertion, angles of upper six ribs; action, extends, abducts, and rotates thoracic vertebrae; nerve supply, dorsal branches of thoracic nerves.

Synonym: musculus iliocostalis thoracis, musculus iliocostalis dorsi.