brachialplexusanatomy-1

Anterior primary rami of C5-T1. Phrenic nerve C3/4/5. 3 important nerves originate above the clavicle. C5 root-dorsal scapular. C5/6/7 roots-long thoracic nerve (Bell) C5/6 upper trunk-suprascapular nerve. T1 contributes preganglionic sympathetic fibres to stellate ganglion.

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