I — Anconeus; 2 — Flexor muscle, common head; 3 — Medial epicondyle; 4 — Triceps brachii; 5 — Triceps brachii; Articularis cubiti; 6 — Medial intermuscular septum of arm; 7 — Triceps brachii, medial head; deep head; 8 — Latissimus dorsi; 9 — Teres major; 10 — Teres minor;
II — Rhomboid major; 12 — Infraspinatus; 13 — Supraspinatus; 14 — Rhomboid minor; 15 — Levator scapulae; 16 — Pectoralis major, clavicular head; 17 — Sternohyoid; 18 — Sternocleidomastoid; 19 — Subclavius; 20 — Omohyoid, inferior belly; 21 — Trapezius; 22 — Deltoid; 23 — Triceps brachii, long head; 24 — Triceps brachii, lateral head; 25 — Brachialis; 26 — Nutrient foramen; 27 — Brachioradialis; 28 — Lateral intermuscular septum of arm; 29 — Extensor carpi radialis longus; 30 — Lateral epicondyle; 31- Extensor carpi radialis brevis;
32 — Extensor digitorum; 33 — Extensor carpi ulnaris
