肩胛下动脉，腋动脉下段发出，除分支至肩胛下肌外，末端分为两支，胸背动脉营养背阔肌；旋肩胛动脉穿三边孔分布于肩胛骨背侧肌。后者与肩胛上动脉（甲状颈干的分支）、肩胛背动脉（甲状颈干或锁骨下动脉的分支）吻合成肩胛动脉网。
自肩胛下动脉（subscapular artery, SA）发出后，先行于大圆肌的深面，进入三边间隙，距CSA发自肩胛下动脉的距离约为4cm，分成皮支和骨支。
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... arteria submentalis 颏下动脉 arteria subscapularis 肩胛下动脉 arteria sulci centralis 中央沟动脉 ...
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... 胸外侧动脉 lateral thoracic a. 肩胛下动脉 subscapular a. 旋肩胛动脉 circumflex scapular a. ...
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自肩胛下动脉 subscapular artery
旋肱后动脉大多与肩胛下动脉共干。
The posterior humeral circumflex artery common arises from the subscapular artery mostly.
结果乳腺癌的供血动脉多起源于胸外侧动脉和肩胛下动脉。
Results the blood supply of breast cancer mainly arises from the lateral thoracic and subscapular arteries.
肩胛下动脉有恒定而发达的肌支至冈下肌，及一长的侧支至前臂筋膜张肌和臂三头肌长头；
The subscapular artery has a definite and strong branch to the infraspinatus muscle, and a long collateral branch to the long head of the triceps cervical and the tensor antebrachii.
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