nuchal line

nuchal line n any of several ridges on the outside of the skull: as

a) one on each side that extends laterally in a curve from the external occipital protuberance to the mastoid process of the temporal bone called also superior nuchal line

b) OCCIPITAL CREST (a)

c) one on each side that extends laterally from the middle of the external occipital crest below and roughly parallel to the superior nuchal line called also inferior nuchal line