Semispinalis Thoracis

Region: Back Muscles · All back muscles

Semispinalis Thoracis at a glance

OriginTransverse processes of T6–T10
InsertionSpinous processes of C6–T4
ActionsExtends the thoracic and cervical spine; Rotates the spine to the opposite side
Nerve supplyDorsal rami of spinal nerves
Please note: This page is an anatomy education summary for students and curious readers, not medical advice. Attachment points are given in their classic short form; individual anatomy varies, and detailed dissection-level descriptions belong in an anatomy atlas.