Reproduced without permission. I could not find the original source to credit. Thank you to those that donate their bodies for education and research.
The nuchal ligament (ligamentum nuchae) lies midline between the trapezius muscles.
Nuchal and Supraspinous Ligaments
There is a tendinous ellipse of connective tissue between the shoulder blades where the left and right trapezii meet midline.
A lamina of connective tissue connects the top of the trapezii to the base of the skull.