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Organization of the Upper Limb Robert S. Staron, Ph.D. August Immersion.

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Presentation on theme: "Organization of the Upper Limb Robert S. Staron, Ph.D. August Immersion."— Presentation transcript:

1 Organization of the Upper Limb Robert S. Staron, Ph.D. August Immersion

2 Grant’s Atlas of Anatomy 8 th ed Grant’s Atlas 8 th ed

3 Antr division: flexor comp. Postr division: ext comp. Netter’s Atlas of Human Embry 2002

4 Origin of Limb Muscles Origin of Limb Muscles Dorsal muscle mass forms extensors and supinators in upper limb, extensors and abductors in lower limb. 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. Ventral muscle mass forms flexors and pronators in upper limb and flexors and adductors in lower limb. Morphogenesis guided by CT, not myoblasts Morphogenesis guided by CT, not myoblasts Split into individual muscles, cell death involved Split into individual muscles, cell death involved Carlson l999 Human Embryology Larsen 1993

5 Hollinshead’s Textbook of Anatomy 5 th ed

6 Grant’s Dissector 13 th ed

7 Brachial Plexus Netter’s Atlas 2 nd ed

8 1) trapezius m. 2) latissimus dorsi m. 3) levator scapulae m. 4) rhomboideus major m. 5) rhomboideus minor m. 6) serratus anterior m. 1) infraspinatus m. 2) supraspinatus m. 3) subscapularis m. 4) teres minor m. 5) teres major m. 6) deltoid m. Extrinsic shoulder mm.Intrinsic shoulder mm. Anterior thorax mm. 1) pectoralis major and minor mm. 2) subclavius m.

9 Netter’s Atlas of Human Anatomy 2 nd ed

10 rotator cuff musculature Netter’s Atlas 2 nd ed

11

12 Grant’s Dissector 13 th ed

13 brachium biceps brachii m. biceps brachii m. long head long head short head short head brachialis m. brachialis m. coracobrachialis m. coracobrachialis m. triceps brachii m. lateral head medial head long head anconeus m. antr compartmentpostr compartment

14 musculocutaneous n. (C5-C7) Netter’s Atlas of Human Anatomy 2 nd ed biceps brachii m. brachialis m. coracobrachialis m.

15 axillary n. (C5-C6) radial n. (C5-T1) Netter’s Atlas of Human Anatomy 2 nd ed deltoid m. teres minor m. triceps brachii m. anconeus m. (brachialis m.)

16 Grant’s Dissector 13 th ed

17

18 antebrachium pronator teres m. pronator teres m. flex. carpi radialis m. flex. carpi radialis m. palmaris longus m. palmaris longus m. flex. carpi ulnaris m. flex. carpi ulnaris m. flex. digit. superf. m. flex. digit. superf. m. flex. digit. profund. m. flex. digit. profund. m. flex. pollicis longus m. flex. pollicis longus m. pronator quadratus m. pronator quadratus m. brachioradialis m. ext. carpi radialis longus m. ext. carpi radialis brevis m. ext. carpi ulnaris m. extensor digitorum m. extensor digiti minimi m. extensor indicis m. abd pollicis longus m. ext. pollicis longus/brevis m. supinator m. antr compartmentpostr compartment

19 radial n. (C5-T1) Netter’s Atlas of Human Anatomy 2 nd ed triceps brachii m., anconeus m. (brachialis m.) BR, ECRL, ECRB, ED, EDM, supinator, ECU, EI, AbdPL, EPL, EPB

20 ulnar n. (C7-T1) Netter’s Atlas of Human Anatomy 2 nd ed flex carpi ulnaris m. medial ½ FDP + 14 intrinsic hand muscles

21 median n. (C5-T1) Netter’s Atlas of Human Anatomy 2 nd ed PT, FCR, PL, FDS, lat ½ FDP, FPL, PQ + 5 intrinsic hand muscles

22 Grant’s Atlas of Anatomy 11 th ed

23 intrinsic hand muscles 7 interosseii mm. (4 dorsal/3 palmar) 7 interosseii mm. (4 dorsal/3 palmar) 4 lumbrical mm. (1, 2, 3, 4) 4 lumbrical mm. (1, 2, 3, 4) palmaris brevis m. palmaris brevis m. adductor pollicis m. adductor pollicis m. three thenar mm. (OP, abd.PB, FPB) three thenar mm. (OP, abd.PB, FPB) three hypothenar mm. (ODM, abd.DM, FDMB) three hypothenar mm. (ODM, abd.DM, FDMB)

24 intrinsic hand muscles 7 interosseii mm. (4 dorsal/3 palmar) 7 interosseii mm. (4 dorsal/3 palmar) 4 lumbrical mm. (1, 2, 3, 4) 4 lumbrical mm. (1, 2, 3, 4) palmaris brevis m. palmaris brevis m. adductor pollicis m. adductor pollicis m. three thenar mm. (OP, abd.PB, FPB) three thenar mm. (OP, abd.PB, FPB) three hypothenar mm. (ODM, abd.DM, FDMB) three hypothenar mm. (ODM, abd.DM, FDMB) ( median n.) (ulnar n.)

25 upper limb - cutaneous innervation Netter’s Atlas of Human Anatomy 2 nd ed

26 upper limb – dermatome pattern Netter’s Atlas of Human Anatomy 2 nd ed


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