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目的:对比6000年前人组和现代人组下颌骨下颌小舌形态,探讨下颌小舌的演化趋势。方法:取西安地区6000年前人类下颌骨标本84例,现代人下颌骨标本81例,观测下颌小舌形态并按A.Tuli提出的4种分型分类。结果:6000年前人类组中下颌小舌结节型占比例最大,现代人组中三角型和平角型所占比例较大。结论:推断随着人类的进化,下颌小舌形态趋向于隆起形。
OBJECTIVE: To compare the morphology of the mandibular and lingual mandibular microglia between human and modern people in 6000 years ago, and to explore the evolution trend of mandibular epiglottis. Methods: Eighty-four human mandible specimens of 6 000 years ago in Xi’an area and 81 mandibular specimens of modern people were obtained. The morphology of the mandibular tongue was observed and classified according to A. Tuli’s classification. Results: In the human group, the nodules accounted for the largest proportion in 6000 years ago, and the triangular type of peace angle accounted for the largest proportion in the modern group. Conclusions: It is inferred that as humans evolve, the morphology of the lower jaw tongue tends to be raised.