TuberculumsellaeThe raised anterior margin of the pituitary fossa.Anterior clinoidprocessA smooth projection from the posteromedial border of the lesser wing that givesattachment to the tentorium cerebelli.SphenoidalconchaeTwo curved plates of bone that form the anterior wall and part of the floor of thesphenoidal sinus, and carry the entrance to it. They also mark the posterior extent of thenasal cavity.ArticulationsThe sphenoid bone articulates with 12 bones: the vomer, ethmoid bone, frontal bone,occipital bone, two parietal bones, two temporal bones, two zygomatic bones, and twopalatine bones.FACIAL BONESThere are fifteen facial bones, six of which are paired and three of which are single. They articulate with thecranial bones but do not contact the brain. They give attachment to the muscles of facial expression andmastication, contain the teeth, and contribute to the nasal and orbital cavities.Two maxillaeTwo zygomatic bonesTwo palatine bonesTwo lacrimal bonesTwo nasal bones
Two inferior nasal conchaeOne vomerOne mandibleOne hyoid boneMAXILLAThe paired maxillary bones support the teeth of the upper jaw andcontribute to much of the skeleton of the upper face.AlveolarprocessA projection that extends inferiorly from the body of the maxilla and supports the teethwithin their bony sockets.PalatineprocessA projection that extends horizontally to form most of the hard palate.Incisive canalA passage formed by the union of the palatine processes that transmits the greaterpalatine arteryand nasopalatine nerve.ZygomaticprocessA projection that extends laterally from the body and articulates with the zygomaticbone.Infra-orbitalcanalA passage that transmits the infra-orbital nervesand vessels.Infra-orbitalforamenThe anterior opening of the infra-orbital canal that transmits the infra-orbital nervesandvessels.Maxillary sinusThe largest of the paranasal sinuses, it is located in the maxilla body and communicateswith the nasal cavity through the maxillary hiatus.ArticulationsEach maxilla articulates with nine bones: the frontal bone, ethmoid bone, contralateralmaxilla, and ipsilaterally, the nasal bone, zygomatic bone, lacrimal bone, inferior nasalconcha, palatine bone, and vomer.ZYGOMATIC BONEThe two zygomatic bones form the skeleton of the cheeks and the inferiorand lateral walls of the orbit.TemporalprocessA projection that forms the prominent zygomatic arch by articulating with the zygomaticprocess of the temporal bone. The zygomaticotemporal nervealso traverses thissection of the bone.ZygomaticofacialforamenAn opening located on the lateral surface that transmits the zygomaticofacial nervesand vessels.ArticulationsEach zygomatic bone articulates with four bones: the frontal bone, sphenoid bone, andipsilaterally, the temporal bone, and maxilla.