SPLENIUS CERVICIS

• Origin

Spinous processes of T3-T6 vertebrae, ligamentum nuchae

• Insertion

Transverse processes of C1-C3 vertebrae

• Agonist(s)

- Semispinalis

- Erector spinae

• Antagonist(s)

- Sternocleidomastoid

• Function

Extends and rotates head, assists in head and neck posture