![[左肺动脉]后底支 - 肺部 - 肺动脉 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/poumons-illustrations/images/v2/ad49f69fe8f76241713b0b313d01e31f3f697865fc6caf53555907a71ec0aa00?ar=640:670&auto=format,compress&bg=FFFFFF&fit=clip&p64=MTQ1NCwxMTY0&t=W-W3puiCuuWKqOiEiV3lkI7lupXmlK8&tf=Tm90byBTYW5zIFND&tx=1454&ty=1164&w=350&wk=1&s=4bb105ebf4f70a44e5a60f42016f1b06)
[左肺动脉]后底支
Arteria segmentalis basalis posterior pulmonis sinistri
定义
左肺后基底段动脉（A10）是左下肺动脉的一支，供应左下叶的后基底段（S10）。
后基底段动脉起自左肺动脉的降（下）干，通常作为左下叶动脉的终末支之一。该动脉向后下方走行，为左下叶的后基底支气管肺段提供动脉血液供应。该肺段位于左肺的后基底部，紧邻胸后壁与脊柱，上界为外侧基底段和上段。
主要特征：
起源： 左下肺动脉（基底干）的分支
供应范围： 左下叶的后基底支气管肺段（S10）
走行： 与后基底节段性支气管（B10）伴行，遵循肺动脉在支气管血管束内与相应支气管紧密伴行的原则
引流： 相应的静脉引流经后基底静脉汇入左下肺静脉
參考資料
![[左肺动脉]后底支 - 肺部 - 肺动脉 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/poumons-illustrations/images/v2/ad49f69fe8f76241713b0b313d01e31f3f697865fc6caf53555907a71ec0aa00?ar=640:670&auto=format,compress&bg=FFFFFF&fit=clip&p64=MTQ1NCwxMTY0&t=W-W3puiCuuWKqOiEiV3lkI7lupXmlK8&tf=Tm90byBTYW5zIFND&tx=1454&ty=1164&w=200&wk=1&s=4a4904edbc623953daf258f1cb928e49 "[左肺动脉]后底支 - 肺部 - 肺动脉 - e-Anatomy")
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