ABEthmoidalcellsFrontal sinusesZygomatic process of frontal boneSuperior orbital fissureFrontalsinusesEthmoidal cellsMaxillarysinusesMaxillary sinusRoots of posteriorupper molarsOrbital plate ofethmoid boneNasal septumForamen rotundum
Fig. 8.236 Medial wall of the nasal cavity—the nasal septum.
Nasal spine of frontal bonePerpendicular plate of ethmoid bonePituitary fossaSphenoidal sinusVomerNasal crest ofmaxillary andpalatine bonesIncisor crestSeptalcartilageNasal bone
Fig. 8.237 Floor of the nasal cavity (superior view).
Septal cartilageNarisAnterior nasal spineIncisive canalPalatine process of maxillaHorizontal plate of palatineSoft palateNasal crestsMaxillary sinus
Fig. 8.238 Roof of the nasal cavity.
Cribriform plateOpening of sphenoidal sinusAla of vomerVomerSphenoidal rostrum(articulates in themidline with the vomer)Nasal bonesNasal spine of frontal bone
Fig. 8.239 Lateral wall of the nasal cavity. A. Bones.
B. Covered with mucosa. C. Conchae broken away at attachment to lateral wall.
AFrontal process of maxillaSuperior conchaMiddle conchaMedial pterygoid plate ofsphenoid boneUncinate process of ethmoidPerpendicular plateof palatine boneInferior conchaMinor alar cartilageMajor alar cartilageLateral process ofseptal cartilageLacrimal boneNasal bone
BCOpening ofpharyngotympanic tubeNasopharynxSoft palateInferior conchaMiddle conchaSuperior conchaOpening of posterior ethmoidalcells into lateral wall of superior meatusOpening of sphenoidal sinusinto spheno-ethmoidal recessOpening of middle ethmoidalcells onto ethmoidal bullaSemilunar hiatusOpening of maxillary sinus infloor of semilunar hiatus Opening of nasolacrimal ductInfundibulum opening of frontonasalduct that drains the frontal sinusand anterior ethmoidal cells
Fig. 8.240 Nares. A. Inferior view. B. Associated muscles.
NaresAMajor alar cartilageMinor alar cartilagesInferior nasal spine of maxillaConnective tissueSeptal cartilageBOrbitAttachment to frontalprocess of maxillaNasalis muscleAttachment to maxillaDepressor septi nasiNarisLevator labii superioris alaeque nasi
Fig. 8.241 Choanae (posterior view). A. Overview. B. Magnified view.
Ala of vomerSphenoidal rostrumSphenoidal process of palatine bonePalatine boneMaxillaPalatovaginal canalVomerBAVomerSphenoid boneMedial pterygoidplate of sphenoidHorizontal plate of palatine bonePyramidal process of palatine boneOral cavityChoanaeChoanaeVaginal process of medial pterygoid plate
Fig. 8.242 Gateways to the nasal cavities.
Fig. 8.243 Arterial supply of the nasal cavities. A. Lateral wall of the right nasal cavity. B. Septum (medial wall of right nasal cavity).