Polcaro Lauren, Charlick Matthew, Daly Daniel T.
Saint Louis University
Michigan State University College of Osteopathic Medicine
The brachial plexus is formed by the anterior primary rami of C5 through T1 and provides sensory and motor innervation of the upper extremity. The brachial plexus is divided, proximally to distally, into rami/roots, trunks, divisions, cords, and terminal branches. The trunks can be found within the posterior triangle of the neck, between the anterior and middle scalene muscles. The brachial plexus, along with the axillary artery, can be considered as a large neurovascular bundle that travels in the axilla to supply the upper extremity.
臂丛神经由颈5至胸1的前支组成，为上肢提供感觉和运动神经支配。臂丛神经从近端到远端分为前支/神经根、干、股、束和终末分支。干位于颈部后三角内，在前斜角肌和中斜角肌之间。臂丛神经与腋动脉一起可被视为一个大的神经血管束，它在腋窝内走行以供应上肢。
