A text-book on diseases of the ear, nose and throat . rticu-lates with the rough surface on each side of the body of the sphenoidbone. Anteriorly it articulates with the lachrymal bone and the nasalprocess of the sux^erior maxillary bone, above with the orbital portionof the frontal bone on each side of the ethmoidal notch, the frontal bone AXATOMY AXD PHYSIOLOGY OF THE NOSE AND NASOPHARYNX. 227 presenting depressions which, when joined to corresponding ones in theethmoid bone^ comiDlete some of the ethmoidal cells and the anterior andposterior ethmoidal canals. Below, the lateral mass of the
A text-book on diseases of the ear, nose and throat . rticu-lates with the rough surface on each side of the body of the sphenoidbone. Anteriorly it articulates with the lachrymal bone and the nasalprocess of the sux^erior maxillary bone, above with the orbital portionof the frontal bone on each side of the ethmoidal notch, the frontal bone AXATOMY AXD PHYSIOLOGY OF THE NOSE AND NASOPHARYNX. 227 presenting depressions which, when joined to corresponding ones in theethmoid bone^ comiDlete some of the ethmoidal cells and the anterior andposterior ethmoidal canals. Below, the lateral mass of the ethmoid bonearticulates with the orbital portion of the upper jaw and orbital processof the palate bone. All these neighboring bones help to close in theethmoidal cells, some even containing accessory air-cells. On the outersurface the lateral mass of the ethmoid bone is closed by the thin laminaj)apyracea, or orbital i^late, which forms part of the inner wall of theorbit. This is apt to be forced in towards the orbit in disease of the eth- FiG. Lateral wall of the nose ; sounds lying in the laclirymonasal duct and in the cavity of the (Heymann, after Mihalkovics.) 1, crista galli; 2, cribriform lamina; 3, middle turbinate;4, superior turbinate ; 5, spheno-ethmoid recess ; G, superior (turbinate) meatus ; 7, opening of sphenoidsinus; S, sphenoid sinus; 9, sphenoid prominence; 10, sphenoid bone; 11, nasopharyngeal meatus;12, pharyngeal recess ; 13, mouth of Eustachian tube; 14, salpingopalatine fold ; 15, soft palate ; 16, hardpalate ; 17, nasolachrymal duct; IS, inferior turbinate; 19, ala nasi; 20, entrance to middle meatus;21, apex nasi; 22, limen nasi; 23, agger nasi; 24, dorsum nasi; 2.), nasal bone; 26, root of the nose;27, fornix nasi; 28, frontal sinus. moid cells, causing displacement of the globe. The inner or mesial wallof the lateral mass forms the outer wall of the nasal fossa, and is com-posed of two shell-like bones, the upper and middle turbinat
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