http://en.wikipedia.org/wiki/Anatomy_of_the_human_nose
The form of the nasal subunits — the dorsum, the sidewalls, the lobule, the soft triangles, the alae, and the columella — are configured differently, according to the race and the ethnic group of the patient, thus the nasal physiognomies denominated as: African, platyrrhine (flat, wide nose); Asiatic, subplatyrrhine (low, wide nose); Caucasian, leptorrhine (narrow nose); and Hispanic, paraleptorrhine (narrow-sided nose). The respective external valve of each nose is variably dependent upon the size, shape, and strength of the lower lateral cartilage.
The form of the nasal subunits — the dorsum, the sidewalls, the lobule, the soft triangles, the alae, and the columella — are configured differently, according to the race and the ethnic group of the patient, thus the nasal physiognomies denominated as: African, platyrrhine (flat, wide nose); Asiatic, subplatyrrhine (low, wide nose); Caucasian, leptorrhine (narrow nose); and Hispanic, paraleptorrhine (narrow-sided nose). The respective external valve of each nose is variably dependent upon the size, shape, and strength of the lower lateral cartilage.
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