Retrocollis

Splenius Capitis
Posted On July 20 2019. Updated On July 20 2019.
The splenius capitis is a broad, straplike muscle in the back of the neck. It pulls on the base of the skull from vertebrae in the neck and upper thorax.
Trapezius
Posted On July 20 2019. Updated On July 20 2019.
In human anatomy, the trapezius is a large superficial muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae and laterally to the spine of the scapula (shoulder blade).