occipital crest

noun

Medical Definition of occipital crest

: either of the two ridges on the occipital bone connecting the occipital protuberances and foramen magnum:
a : a median ridge on the outer surface of the occipital bone that with the external occipital protuberance gives attachment to the ligamentum nuchae

called also external occipital crest, median nuchal line

b : a median ridge similarly situated on the inner surface of the occipital bone that bifurcates near the foramen magnum to give attachment to the falx cerebelli

called also internal occipital crest

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