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选用６７侧正中矢状切的头颅标本，观测鼻腔外侧壁后部的中、下鼻甲后端至咽鼓管腭襞之间的间隙形态和位置特点。结果表明：①鼻甲后间隙形态呈上窄下宽的四边形（４１．８％），其形态大小随中、下鼻甲后端的形态而变化；②中、下鼻甲后瑞至腭襞前界的平均距离分别为４．４±２．４ｍｍ和７．４±１．９ｍｍ，鼻甲后间隙高度为１９．３±２．９ｍｍ；③老年标本该间隙明显增大，粘膜萎缩，其表面凹凸不平。并就该间隙与鼻后孔的位置关系和鼻后沟位置及走向与鼻腔后部的引流关系作了讨论．
Select the 67 sides of the sagittal plane of the sagittal suture to observe the posterior nasal lateral wall of the posterior end of the turbinate to the eustachian tube palatal palatal gap between the shape and location characteristics. The results showed that: ① The shape of the posterior nasal turbinates showed a narrow, narrow and wide quadrilateral shape (41.8%), and its shape varied with the shape of the posterior end of the middle and inferior turbinate; ② The average of the posterior border of the middle and inferior turbinate to the palatal The distances were 4.4 ± 2.4mm and 7.4 ± 1.9mm respectively, and the height of the nasal space was 19.3 ± 2.9mm. The gap of the aged specimens increased obviously, the mucosa atrophy and the surface was uneven. The relationship between the position of the posterior nasal hole and the position of the posterior nasal hole and the position and direction of the posterior nasal groove and the drainage of the posterior nasal cavity were discussed.