The bony infrastructure of the nose consists of the nasal bones and the frontal process of the maxilla. The cartilage is derived from the upper lateral (triangular) cartilages as the semimobile part, and the alar or apical cartilages as the mobile part. This latter part also includes duplication of the adjacent skin. All of these structures are age, sex, and race dependent. The comparative ratio of the three nasal parts in Indo-European adults is more or less 1:1:1. In children, the osseous part (i.e., the nasal bones) is much shorter, whereas the semimobile and mobile parts are longer in old age [1, 2, 4].
KeywordsPermeability Respiration Crest Sinusitis Keystone
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