brachial plexus
医药科技

        formed by the ventral primary divisions of the 5th to 8th cervical nerves and the most part of the first tho racic nerve. It lies in the lateral part ofthe neck in the clavicular region,extend ing from the scalenus anterior to the axil la. This plexus sup......（本文共 315 字）     [阅读本文] >>