1 — Sternocleidomastoid; 2 — Sternohyoid; 3 — Omohyoid, superior belly; 4 — Hyoid bone; 5 — Mylohyoid; 6 — Platysma; 7 — Digastric, anterior belly; 8 — Submandibular gland; 9 — Masseter; 10 — Stylohyoid; 11 — Digastric, posterior belly; 12 — Cervical fascia