Two muscles, the infraspinatus and teres minor, connect the shoulder blade to the upper arm bone and roll the arms outward.
冈下肌和小圆肌这两块肌肉,将肩胛骨和上臂连接起来,使手臂外旋。
One idea for how the ulnar nerve got its silly name is the fact that the nerve also runs through the humerus bone in your upper arm.
尺骨神经怎么会得到这样的一个愚蠢的名字“笑骨”,事实上其道理就在于这条神经也通过您的上臂上的肱骨上运行。
The first find was a humerus, or upper arm bone, of a giant ground sloth.
第一个发现是巨型树懒的肱骨,或上臂骨。
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