Structures

  • Splenius capitis
  • Splenius cervicis

MuscleActionOriginInsertionInnervationBlood supply
Splenius capitis- Together: Extend neck
- Individually: Rotate head and laterally flex to same side
- Inferior 1/2 of ligamentum nuchae
- Spinous processes of C7-T4
- Mastoid process
- Skull inferior to lateral 1/3 of superior nuchal line
- Posterior rami middle cervical nerves- Muscular branches of occipital artery
Splenius cervicis- Together: extend neck
- Individually- Rotate head and laterally flex to same side
- Spinous processes of TIII to TVI- Transverse processes of C1-3- Posterior rami lower cervical nerves- Muscular branches of occipital artery