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The inion is the most prominent projection of the protuberance which is located at the posterioinferior (rear lower) part of the human skull. The nuchal ligament and trapezius muscle attach to it. The inion (ἰνίον, iníon, Greek for the occipital bone) is used as a landmark in the 10-20 system in electroencephalography (EEG) recording
The occipital bun is a protuberance of the occipital bone. Its size and shape has been compared to that of a dinner roll. It is a quintessential trait of Neanderthals, though it is a trend in archaic Homo species. The true purpose of the occipital bun has not yet been defined. [3] However, some studies have found possible evolutionary purposes.
Along the internal surface of the occipital bone, at the point of intersection of the four divisions of the cruciform eminence, is the internal occipital protuberance. Running transversely on either side is a groove for the transverse sinus .
The confluence of sinuses is found deep to the internal occipital protuberance of the occipital bone of the skull. [1] This puts it inferior to the occipital lobes of the brain, and posterosuperior to the cerebellum. [1] It connects the ends of the superior sagittal sinus, the straight sinus, and the occipital sinus. [1]
Protuberance may refer to: Mental protuberance; Occipital protuberances, of which may refer to ... Anatomical terms of bone § Protrusions, including tubercle ...
The clivus (/ ˈ k l aɪ v ə s /, [1] Latin for "slope") or Blumenbach clivus is a part of the occipital bone at the base of the skull. [2] It is a shallow depression behind the dorsum sellae of the sphenoid bone. It slopes gradually to the anterior part of the basilar occipital bone at its junction with the sphenoid bone. It extends to the ...
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Anatomical terms of bone [ edit on Wikidata ] In the occipital bone , the lower division of the cruciate eminence is prominent, and is named the internal occipital crest ; it bifurcates near the foramen magnum and gives attachment to the falx cerebelli ; in the attached margin of this falx is the occipital sinus , which is sometimes duplicated.