I — Trachea; 2 — Sternothyroid; 3 — Scalenus anterior; Anterior scalene; Scalenus medius; Middle scalene; Scalenus posterior; Posterior scalene; 4 — Sternohyoid; 5 — Omohyoid; 6 — Hyoid bone; 7 — Digastric, posterior belly; 8 — Stylohyoid; 9 — Masseter; 10 — Mandible;
II — Digastric, anterior belly; 12 — Mylohyoid; 13 — Sternocleidomastoid; 14 — Omohyoid, superior belly; 15 — Clavicle; 16 — Omohyoid,
inferior belly; 17 — Thyroid gland
