| vena emissaria mastoidea | <anatomy, vein> The vein that connects the sigmoid sinus with the occipital vein or one of the tributaries of the external jugular vein by way of the mastoid foramen. Synonym: vena emissaria mastoidea, emissarium mastoideum. (05 Mar 2000) |
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| pars mastoidea ossis temporalis | The portion of the petrous part of the temporal bone bearing the mastoid process. Synonym: pars mastoidea ossis temporalis. (05 Mar 2000) |
| incisura mastoidea | The groove medial to the mastoid process of the temporal bone from which the digastric muscle originates. Synonym: incisura mastoidea, digastric groove, digastric notch, mastoid notch. (05 Mar 2000) |
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