上、下呼吸道的分界是A.舌骨下缘B.会厌下缘C.甲状软骨下缘D.环状软骨下缘E.声门

作者: rantiku 人气: - 评论: 0
问题 上、下呼吸道的分界是
选项 A.舌骨下缘 B.会厌下缘 C.甲状软骨下缘 D.环状软骨下缘 E.声门
答案 D
解析 :呼吸器官从鼻开始到环状软骨下缘称上呼吸道,环状软骨以下的气管、支气管称下呼吸道。呼吸性支气管以下至肺泡则为气体交换的场所。

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