splenius capitis muscle

The splenius capitis muscle is a prime mover for head extension.

The trapezius and splenius capitis muscle attach to the nuchal ligament.

The splenius capitis muscle is innervated by the posterior ramus of spinal nerves C3 and C4.

The broad-surfaced occipital region at the back of the skull provides a large attachment area for the splenius capitis muscles of the neck.

To it is attached the Occipitalis muscle, the Splenius capitis muscle, the trapezius muscle, and the Sternocleidomastoid muscle.