Written by the Fiveable Content Team • Last updated August 2025
Written by the Fiveable Content Team • Last updated August 2025
Definition
The splenius capitis is a broad, strap-like muscle in the back of the neck, part of the deeper layer of muscles that extends from the upper thoracic vertebrae to the skull. It functions to rotate the head, bend it sideways, and extend the neck.
AP course connection
Topic 11.3: 11.3 Axial Muscles of the Head, Neck, and Back
A large superficial muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula; involved in moving the shoulders and extending the neck.
Erector Spinae: A group of muscles running along your spine responsible for keeping you upright and extending or bending your spine