On the other hand, the median nerve innervates pronator teres and pronator quadratus, which pronate the forearm turning the palm posteriorly.

另一方面，正中神经支配旋前圆肌与旋前方肌，使前臂旋前，掌心向后旋转。

With all these arm movements, most of the rotator cuff muscles — like the teres minor or the infraspinatus — are acting like synergists.

通过所有这些手臂运动，大多数肩袖肌肉——如小圆肌或冈下肌——都像增效器一样发挥作用。