Levatores Costarum - Podcast Version TeachMeAnatomy 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The levatores costarum are a set of deep muscles of the back. They consist of 12 small paired muscles, and can also be considered a deep chest wall muscle group. Attachments: Originates from the transverse processes of C7-T11, and attaches to the rib below. Actions: Elevates the ribs during respiration. Contributes to lateral flexion of the vertebral column. Innervation: Posterior rami of the spinal nerves T1 – T12 Blood Supply: Posterior intercostal arteries. Adobe Stock, Licensed to TeachMeSeries Ltd Fig 1The levator costarum muscle group. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Rate This Article