保持喉气管通畅至关重要的是A．甲状软骨B．环状软骨C．会厌软骨D．杓状软骨E．舌骨

作者: rantiku 人气: - 评论: 0

问题保持喉气管通畅至关重要的是

选项 A．甲状软骨 B．环状软骨 C．会厌软骨 D．杓状软骨 E．舌骨

答案 B

解析：环状软骨是喉气管中惟一完整的环形软骨，对保持喉气管通畅至关重要。如果创伤或疾病引起环状软骨缺损，常引起喉狭窄。

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