. Quain's Elements of anatomy. , flat, and smooth ; anteriorly it reaches themargin of the orbit for a short distance at the root of the nasal process : externalhit is bounded by the rough surface for the malar bone. The internal border presentsbehind the nasal process, an excavation which receives the lachrymal bone, theImJiri/raal notch, and then a nearly straight margin for articulation with theethmoid and palate bones. The ])Osterior border is smooth, rounded and free, the spheno-maxillary fissure ; the infraorhital (jroove commences here, andleads forwards into the canal of the
. Quain's Elements of anatomy. , flat, and smooth ; anteriorly it reaches themargin of the orbit for a short distance at the root of the nasal process : externalhit is bounded by the rough surface for the malar bone. The internal border presentsbehind the nasal process, an excavation which receives the lachrymal bone, theImJiri/raal notch, and then a nearly straight margin for articulation with theethmoid and palate bones. The ])Osterior border is smooth, rounded and free, the spheno-maxillary fissure ; the infraorhital (jroove commences here, andleads forwards into the canal of the same name, which opens anteriorly by the infra-orbital foramen. From the infraorbital are given off the anterior and middle dentaltanals, which run down in the substance of the facial portion of the bone, andconvey the anterior and middle dental vessels and nerves. The nasal process, slender and tapering, has an external surface, smooth andcontinuous with the facial surface of the body, and an internal surface, the hinder E 2. r;2 THE BONES OF THE HEAD. part of which is irregular, and fits against the anterior extremity of the lateral massof the ethmoid, comjjleting the foremost cells of that bone ; in front of this thesurface is free in the outer wall of the nasal fossa, and in its lower part is crossed by•a smooth oblique ridge, called the agger nasi, which forms the upper boundary of(he atrial surface of the body. The anterior border is rough, often grooved, forarticulation with the nasal bone, and its summit is serrated for articulation with thefrontal. Posteriorly, it presents a continuation of the lachrymal groove, which hasalready been seen oii the nasal surface of the body, and which here lodges the lachry-mal sac : the groove is bounded internally by a sharp linear edge, which articulates-with the lachrymal bone, and externally by a smooth border which forms part of theorbital margin. The alveolar Urcler or process, thick and arched, is hollowed out into socketsor a
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Keywords: ., bookcentury1800, bookdecade1890, bookpublishe, booksubjectanatomy
