Organization of the Upper Limb

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Organization of the Upper Limb Robert S. Staron, Ph.D. Summer Anatomy Immersion Grant’s Atlas 8th ed Grant’s Atlas of Anatomy 8th ed Antr division: flexor comp. Postr division: ext comp. Netter’s Atlas of Human Embry 2002 Origin of Limb Muscles Dorsal muscle mass forms extensors and supinators in upper limb, extensors and abductors in lower limb. Ventral muscle mass forms flexors and pronators in upper limb and flexors and adductors in lower limb. Morphogenesis guided by CT, not myoblasts Split into individual muscles, cell death involved Carlson l999 Human Embryology Larsen 1993 Hollinshead’s Textbook of Anatomy 5th ed Grant’s Dissector 13th ed Brachial Plexus Netter’s Atlas 2nd ed Extrinsic shoulder mm. Intrinsic shoulder mm. 1) trapezius m. 1) infraspinatus m. 2) latissimus dorsi m. 2) supraspinatus m. 3) levator scapulae m. 3) subscapularis m. 4) rhomboideus major m. 4) teres minor m. 5) rhomboideus minor m. 5) teres major m. 6) serratus anterior m. 6) deltoid m. Anterior thorax mm. 1) pectoralis major and minor mm. 2) subclavius m. Netter’s Atlas of Human Anatomy 2nd ed rotator cuff musculature Netter’s Atlas 2nd ed Netter’s Atlas 2nd ed Grant’s Dissector 13th ed brachium antr compartment postr compartment biceps brachii m. triceps brachii m. long head lateral head short head medial head brachialis m. long head coracobrachialis m. anconeus m. musculocutaneous n. (C5-C7) biceps brachii m. brachialis m. coracobrachialis m. Netter’s Atlas of Human Anatomy 2nd ed axillary n. (C5-C6) deltoid m. teres minor m. radial n. (C5-T1) triceps brachii m. anconeus m. (brachialis m.) Netter’s Atlas of Human Anatomy 2nd ed Grant’s Dissector 13th ed Grant’s Dissector 13th ed antebrachium antr compartment postr compartment pronator teres m. brachioradialis m. flex. carpi radialis m. ext. carpi radialis longus m. palmaris longus m. ext. carpi radialis brevis m. ext. carpi ulnaris m. flex. carpi ulnaris m. extensor digitorum m. flex. digit. superf. m. extensor digiti minimi m. flex. digit. profund. m. extensor indicis m. flex. pollicis longus m. abd pollicis longus m. pronator quadratus m. ext. pollicis longus/brevis m. supinator m. radial n. (C5-T1) triceps brachii m., anconeus m. (brachialis m.) BR, ECRL, ECRB, ED, EDM, supinator, ECU, EI, AbdPL, EPL, EPB Netter’s Atlas of Human Anatomy 2nd ed ulnar n. (C7-T1) flex carpi ulnaris m. medial ½ FDP + 14 intrinsic hand muscles Netter’s Atlas of Human Anatomy 2nd ed median n. (C5-T1) PT, FCR, PL, FDS, lat ½ FDP, FPL, PQ + 5 intrinsic hand muscles Netter’s Atlas of Human Anatomy 2nd ed Grant’s Atlas of Anatomy 11th ed intrinsic hand muscles 7 interosseii mm. (4 dorsal/3 palmar) 4 lumbrical mm. (1, 2, 3, 4) palmaris brevis m. adductor pollicis m. three thenar mm. (OP, abd.PB, FPB) three hypothenar mm. (ODM, abd.DM, FDMB) intrinsic hand muscles 7 interosseii mm. (4 dorsal/3 palmar) 4 lumbrical mm. (1, 2, 3, 4) palmaris brevis m. adductor pollicis m. three thenar mm. (OP, abd.PB, FPB) three hypothenar mm. (ODM, abd.DM, FDMB) (median n.) (ulnar n.) upper limb - cutaneous innervation Netter’s Atlas of Human Anatomy 2nd ed upper limb – dermatome pattern Netter’s Atlas of Human Anatomy 2nd ed .

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