Iliocostal muscle
Musculus iliocostalis
- Related terms: Iliocostal muscle (Erector spinae muscles)
Definition
Origin: Cranial borders of the vertebral end of ribs
Insertion: Costal angles of the ribs; most cranial termination is on the transverse process of C7 vert. (m. iliocostalis cervicis)
Action: Fixation of the vertebral column or lateral movement when only one side contracts; aids in expiration by pulling ribs caudally
Innervation: Dorsal branches of the nn. thoracici and lumbales
References
Miller's Anatomy of the Dog 4th Edition
