The brachial plexus is a network of nerves formed by the anterior rami of the lower four cervical nerves and first thoracic nerve(C5, C6, C7, C8, and T1). This plexus extends from the spinal cord, through the cervicoaxillary canal in the neck, over the first rib, and into the armpit. It supplies afferent and efferent nerve fibers to the chest, shoulder, arm and hand.
Brachial Plexus - Structure and Location
Brachial Plexus - Branches
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