. Quain's elements of anatomy . at the forepart, the separation between the nasal foss^. The anterior marginof the cartilage, thickest above, is firmly attached to the back of thenasal bones near their line of junction ; and below this it lies suc-cessively between the upper and the lower lateral cartilages, united ulti-mately with the former and loosely with the latter. The posterior marginis fixed to the lower and fore part of the central plate of the ethmoidbone (e) ; and the lower margin is received into the groove of the vomer(v), as well as into the median ridge between the superior maxi
. Quain's elements of anatomy . at the forepart, the separation between the nasal foss^. The anterior marginof the cartilage, thickest above, is firmly attached to the back of thenasal bones near their line of junction ; and below this it lies suc-cessively between the upper and the lower lateral cartilages, united ulti-mately with the former and loosely with the latter. The posterior marginis fixed to the lower and fore part of the central plate of the ethmoidbone (e) ; and the lower margin is received into the groove of the vomer(v), as well as into the median ridge between the superior maxilla. This cartilage is the persistent anterior extremity of the primordialcranium. In young subjects it is prolonged back to the body of thepre-sphenoid bone ; and in many adults an irregular thin band remainsbetween the vomer and the central plate of the ethmoid. NASAL FOSS^. The nasal fossEe, and the various openings into them, with the pos-terior nares, have been previously described as they exist in the skeleton. Fig. Fig. 412.—Transverse vertical section op the j;asal fossjb seen from behind. (Arnold), f1, part of the frontal bone ; 2, crista galli ; 3, pei-pendiciilar plate of tlie ethmoid ;between 4 and 4, the ethmoidal cells ; 5, right middle spongy bone ; 6, left lower spongybone ; 7, vomer; 8, malar bone ; 9, maxillary sinus ; 10, its opening into the middlemeatus. NASAL MUCOUS MEMBEANE. 471 and tlie greater part of tliat description is also applicable generally tothe nose in a recent state ; but there are certain differences whichdepend on the thickness of the lining membrane, which not only linesdie walls of the fossae, but covers the spongy bones on both sides. Thus,in the first place, the nasal cavity is much narrower in the recent , in consequence of the prolongations of the membrane on theirfree margins, the turbinate bones, and more particularly the lower pair,appear to be both more prominent, and longer, than in the dried , s
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