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| infraglottic cavity (位于声襞平面和环状软骨平面之间，上窄下宽，呈漏斗状。 声门下腔的黏膜下组织疏松，炎症时易水肿。小儿的声门下腔狭小，水肿时更易引起喉阻塞，导致呼吸困难) | |||
| cavum infraglotticum; cavum laryngis inferius; infraglottic cavity | |||
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