Anatomy

Origin

Superior-Oblique part: Transverse processes of third, fourth, and fifth cervical vertebrae. Inferior-Oblique Part: Anterior surface of bodies of first two or three thoracic vertebrae. Vertical part: Anterior surfaces of bodies of upper three thoracic and lower three cervical vertebrae.

Insertion

Superior-Oblique part: Anterior arch of atlas. Inferior-Oblique Part: Transverse processes of fifth and sixth cervical vertebrae. Vertical part: Anterior surfaces of the second, third, and fourth cervical vertebrae.

Nerve

C2–C7

Actions

All three parts flex cervical vertebrae if acting bilaterally, if acting only on side they bend the neck laterally.