1 — Head of radius; 2 — Extensor carpi radialis brevis; 3 — Supinator; 4 — Brachialis; 5 — Extensor carpi radialis longus; 6 — Radial nerve; 7 — Brachioradialis; 8 — Cephalic vein; 9 — Biceps brachii; Tendon; 10 — Brachial veins; 11 — Median cubital vein; 12 — Antebrachial fascia; 13 — Brachial artery; 14 — Median nerve; 15 — Pronator teres; 16 — Flexor carpi radialis; 17 — Basilic vein; 18 — Flexor digitorum superficialis; 19 — Palmaris longus; 20 — Ulnar nerve; 21 — Flexor carpi ulnaris; 22 — Ulna; 23 — Proximal radio-ulnar joint; 24 — Anconeus
