what is below the splenius capitis
The splenius muscle of the head and the splenius muscle of the neck work together so that the neck and the head can extend (tilt backward) and rotate. The splenius muscle of the head, also known as the splenius capitis, is a broad muscle located at the back of the neck. It is attached to the base of the skull. The splenius muscle of the neck, also known as the splenius cervicis, is a smaller muscle that is positioned slightly below the splenius capitis. Damage or injury to either splenius muscle can cause neck pain, headaches, facial pain, or shoulder pain.