All of the following muscles are innervated by branches from the brachial plexus except
supraspinatus
Lattismusdorsi
Rhomboid major
Trapezius
BRACHIAL PLEXUS BRANCHES Branches of roots Nerve to Serratus anterior (long thoracic N) -C5, C6, C7 Nerve to Rhomboideus (Dorsal scapular N) -C5 Branches of trunks Suprascapular nerve -C5, C6 Nerve to subclavious -C5,C6 BRANCHES OF CORDS Lateral cord Lateral pectoral nerve -C5, C6, C7 Musculocutaneous nerve -C5, C6, C7 Lateral root of median nerve - C5, C6, C7 Medial cord Medial pectoral nerve - C8, T1 Medial cutaneous nerve of arm - C8, T1 Medial cutaneous nerve of forearm - C8, T1 Ulnar fibres - C7, C8, T1 Median root of median nerve - C8, T1 Posterior cord Upper subscapular nerve - C5, C6 Nerve to latissmusdorsi (Thoracodorsal N) - C6, C7, C8 Lower subscapular nerve - C5, C6 Axillary (circumflex) nerve - C5, C6 Radial nerve - C5, C6, C7, C8, T1 ALSO REMEMBER Nerve supply of Trapezius muscle: Spinal pa of Accessory nerve (Cranial nerve XI) (motor) Branches from C3, C4 (propriceptive)
Upper limb nerve supply and brachial plexus