EntityQ256356· pop 13· linked from 199 articlesethmoid sinusSign in to saveone of the four paired paranasal sinusesConnectionspharynxEntitymastoid part of the temporal boneEntitynasal cavityEntityforamen magnumEntitypterygoid processes of the sphenoidEntitysquamous part of occipital boneEntityparietal boneEntityparanasal sinusEntityhuman noseEntitysella turcicaEntitysuperciliary archEntityexternal occipital protuberanceEntitysphenoidal sinusEntitylabyrinth of ethmoidEntityLatinEntityInternational Standard Book NumberEntitynerveEntityskullEntitypublic domainEntitydigital object identifierEntityCategoriesBones of the head and neckOtorhinolaryngologyRhinologySinus surgery