highest nuchal line

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Related to Nuchal lines: nuchal crest

high·est nu·chal line

a line above and parallel to the superior nuchal line on the external surface of the occipital bone; it gives attachment to the epicranial aponeurosis and occipitalis muscle.
Synonym(s): linea nuchae suprema [TA]
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References in periodicals archive ?
The part of the bone above the highest nuchal line is known to ossify in membrane and may not fuse with the rest of the part even in adulthood, creating the interparietal bone.
In one case, completely separate interparietal bone is found which sutures the rest of the occipital bone at highest nuchal line (Figure 7).
The accuracy in the classification is lower than those reported for majority of sexual dimorphism morphological indicators for the occipital bone, and hence, the indexes and tables of the expected range of foramen magnum dimensions in skulls of men and women should be used only as a first approximation to the diagnosis of sex, which is more accurate when we look at the qualitative features of the occipital bone, such as the roughness of the nuchal lines, the shape of the occipital condyles, and the characteristics of the external occipital protuberance.