groove for transverse sinus groove for transverse sinus 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. groove for transverse sinushuman skull (parietal bones removed). position of groove for transverse sinus shown in red.interior surface of occipital bone. (groove for transverse sinus runs laterally on either side of the internal occipital protuberance.)detailsidentifierslatinsulcus sinus transversita98a02.1.04.031ta2577fma75335anatomical terms of bone 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 base of the skull. upper surface. groove for transverse sinus labelled at bottom. base of the skull. upper surface. transverse sinuses are drawn at bottom.