![[掌背动脉]指背动脉 - 上肢 - 上肢动脉 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/ms-anatomie/images/v2/0c3aa6254ea94510606373e073793e4dc14df7de9f878251d87942524c526890?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=NTkwLDkyOA&t=W-aOjOiDjOWKqOiEiV3mjIfog4zliqjohIk&tf=Tm90byBTYW5zIFND&tx=590&ty=928&w=350&wk=1&s=d47dd9f9c60d40f2df2ad39bcffbcd22)
[掌背动脉]指背动脉
Arteriae digitales dorsales manus
定义
从腕背网络（腕背网络）发出三条细小的掌背动脉，它们向下走行于第二、第三和第四骨间背侧肌上，并分叉为指背支，分别供应中指、环指和小指相邻侧，并与浅掌侧弓的指掌侧固有动脉相交通。
第一掌背动脉起自桡动脉穿过第一骨间背侧肌两头之前，几乎立即分为两支，分别供应拇指和示指的相邻侧；拇指桡侧直接接受来自桡动脉的分支。
參考資料
从腕背网络（腕背网络）发出三条细小的掌背动脉，它们向下走行于第二、第三和第四骨间背侧肌上，并分叉为指背支，分别供应中指、环指和小指相邻侧，并与浅掌侧弓的指掌侧固有动脉相交通。
第一掌背动脉起自桡动脉穿过第一骨间背侧肌两头之前，几乎立即分为两支，分别供应拇指和示指的相邻侧；拇指桡侧直接接受来自桡动脉的分支。
參考資料
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