1 — Sternocleidomastoid; 2 — External jugular vein; 3 — Omoclavicular triangle; Subclavian triangle; 4 — Omohyoid, inferior belly; 5 — Cervical fascia, investing layer; superficial layer; 6 — Omohyoid; 7 — Stylohyoid; 8 — Stylohyoid ligament; 9 — Digastric, posterior belly; 10 — Styloglossus; 11 — Styloid process; 12 — Ramus of mandible; 13 — Masseteric fascia; Masseter; 14 — Platysma; 15 — Stylohyoid; Tendon; 16 — Cervical fascia; 17 — Mandible; 18 — Mylohyoid; 19 — Digastric, anterior belly; 20 — Omohyoid, superior belly; 21 — Sternohyoid; 22 — Cervical fascia, p retracheal layer; 23 — Clavicle; 24 — Trachea; 25 — Lesser supraclavicular fossa
