![[足背动脉]弓状动脉 - 下肢血管造影 - 上肢动脉 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/mi-anatomie/images/v2/dff0d925d8915fb8a853b5b8ea47522445c781838c9e7fa33b845a9dc87add48?ar=640:670&auto=format,compress&bg=FFFFFF&fit=crop&p64=NjU2LDY5Ng&t=W-i2s-iDjOWKqOiEiV3lvJPnirbliqjohIk&tf=Tm90byBTYW5zIFND&tx=656&ty=696&w=350&wk=1&s=545354dbce7db1625d607af18dba0c7a)
[足背动脉]弓状动脉
Arteria arcuata
定义
弓状动脉（a. arcuata；跖骨动脉）起自足外侧跗动脉稍前方；向外侧走行，经跖骨底上方，行于趾短伸肌腱深面，其走行方向受起始点的影响；并与外侧跗动脉及足底外侧动脉相吻合。
该血管发出第二、第三和第四足背跖动脉，沿相应的骨间背侧肌前行；在趾蹼处，每条动脉分为两支足背趾支，分布于相邻各趾。在骨间隙近侧部，这些血管接受来自足底弓的后穿支；在骨间隙远侧部，则与来自足底跖动脉的前穿支相汇合。第四足背跖动脉发出一支，供应第五趾的外侧面。
參考資料
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![[足背动脉]弓状动脉 - 前足MRI - Sagittal T1 - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/forefoot-mri/images/v1/e803f59becd4fe2e386b3e64c94db7c48adf71a8ee18ad09aa73b6ded6a7ae24?ar=640:670&auto=format,compress&bg=000000&fit=crop&p64=NTE4LDMxMA&t=W-i2s-iDjOWKqOiEiV3lvJPnirbliqjohIk&tf=Tm90byBTYW5zIFND&tx=518&ty=310&w=200&wk=1&s=a95592ad59385ecec24ea2a4c4d73143 "[足背动脉]弓状动脉 - 前足MRI - Sagittal T1 - e-Anatomy")
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