The groove for transverse sinus is a groove which runs along the internal surface of the occipital bone, running laterally between the superior and inferior fossae of the cruciform eminence. The transverse sinuses travel along this groove.
A small or absent bony groove in the occiput in conjunction with the compressible nature of the transverse sinus makes this structure vulnerable to tapering with increased ICP.
Additional images
See also Internal occipital protuberance Occipital bone Transverse sinus
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hu:Protuberantia occipitalis interna th:ปุ่มในของท้ายทอย