Brachial Plexus Map

Origins, divisions, cords, and terminal branches of the brachial plexus with clinical correlations.

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Scalene Muscles and the Trunks and Cords of the Brachial Plexus in Human Anatomy

The scalene muscles (anterior, medius, posterior) originate from the cervical vertebral transverse processes and insert on the clavicle and first/second ribs, functioning as accessory muscles of resp…