青海高原牦牛肌皮神经的解剖

Dissection of Musculocutaneous Nerve of Qinghai Plateau Yak

本文首次报道了生活在世界屋脊青海高原高寒低氧环境下牦牛肌皮神经的来源及其行走路线和分布的情况。结果表明：肌皮神经起源于第８颈神经和第１胸神经。肌皮神经除了支配喙臂肌、臂二头肌、臂肌外，还支配前臂背内侧面。

The origins,branches and distribution of musculocutaneous nerve of the Qimghai Yak were studied with gross anatomical method .Its features are as following :the fibers of musculocutaneous nerve are mainly derived from the eighth cervicak (C8) and the first thoracic(T1) nerve roots .These fibers not only supply the coracobrachialis,biceps brachii as well as brachialis,but also innervate the skin and fascia on the dorsomedial aspect of the forearm and on the medial aspect of the carpus and the meatcarpus .