Methods:The origin,cours e,distribution of the la teral descending branch of the anterior humeral circumflex artery were observed on 38 adult upper limb specimens.

• 方法：在38侧经动脉灌注红色乳胶的成人上肢标本上对旋肱前动脉外侧降支的来源、走行、分布进行了解剖学观测，并在4侧标本上摹拟手术实验。