Brachial Plexus, Root & Trunk portion

Brachial plexus formed by the anterior primary rani of lower four cervical nerves & first thoracic nerves (C5 C6 C7 C8 T1) Root 5 Trunks 3 : upper, middle & lower Division 6: anterior & posterior of each Cords 3: Lateral cord: LML Posterior cord: ULNAR Medial cord: M4U
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