- Somethingthatprotrudes.Theopticcanalprotrudesintoethmoidalandsphenoidsinuses.Inotherlocations,itprotrudestocreatebay-window-likeopenings.adanceronthenorthernwallraisesbotharms,herwaistprotrudesleftward.Eminentiacruciataprotrudesperpendicularlytothelo...
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