The superior nuchal line provides an attachment surface on its inferomedial side for the semispinalis capitis muscle, and on its inferolateral side for the obliquus capitis superior.

What does the inferior nuchal line do?

Running from the middle of the median nuchal line, across either half of the nuchal plane is the inferior nuchal line. The inferior nuchal line and the area below it receive the insertions of the Recti capitis posteriores major and minor.

Why is the Ligamentum Nuchae important?

It is a tendon-like structure that has developed independently in humans and other animals well adapted for running. In some four-legged animals, particularly ungulates, the nuchal ligament serves to sustain the weight of the head.