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Brachial Plexus • Roots. Trunks. Divisions. Cords. • Branches. • Roots: • Dorsal scapular n. (C5) • Long thoracic n. (C5,6,7) • Upper trunk: • N. to subclavius. • Suprascapular n. • • • • Lateral cord: Lateral pectoral n. Musculocutaneous n. Lateral root of median n. • • • • • • Medial cord: Medial pectoral n. Medial cutaneous n. of arm. Medial cutaneous n. of forearm. Ulnar n. Medial root of median n. • • • • • Posterior cord: Upper & lower subscapular n. Thoracodorsal n. Axillary n. Radial n. Branches of brachial plexus found in axilla N. To subclavius Long thoracic n. Lateral pectoral n. Musculocutaneous n. Lateral root of median n. Medial pectoral n. Medial cutaneous n. of the arm Medial cutaneous n. of the forearm Ulnar n. Medial root of median n. Upper and lower subscapular n. Thoracodorsal n. Axillary n. Radial n. Lymph nodes of the axilla Lymph nodes of the axilla 1. Anterior (Pectoral) group. 2. Posterior (Subscapular) group. 3. Lateral group. 4. Central group. 5. Infraclavicular (Deltopectoral) group. 6. Apical group. Anterior (Pectoral) group Posterior (Subscapular) group Lateral group Central group Infraclavicular (Deltopectoral) grup Apical group Subclavian lymph trunk Superficial part of back & Scapular region Skin Sensory nerve supply Blood supply Veins Lymphatic drainage Rotator cuff Anatomical spaces Quardangular space Triangular space