I — Spinal cord; 2 — Trapezius; 3 — Multifidus cervicis; 4 — Semispinalis capitis; 5 — Splenius cervicis; Splenius capitis; 6 — Levator scapulae; 7 — Scalenus medius; Middle scalene; 8 — Scalenus anterior; Anterior scalene; 9 — Accessory phrenic nerves; 10 — Internal jugular vein;
II — Sternocleidomastoid;^ — Vagus nerve [X]; 13 — Common carotid artery; 14 — Middle cervical ganglion; 15 — Omohyoid;16 — Sternothyroid; 17 — Thyrohyoid; 18 — Sternohyoid; 19 — Thyroid cartilage; 20 — Platysma; 21 — Vocal ligament; 22 — Cricoid cartilage; 23 — Arytenoid cartilage; 24 — Piriform fossa; Piriform recess; 25 — Inferior constrictor; 26 — Superior thyroid artery; 27 — Sympathetic trunk; 28 — Lateral cervical nucleus; 29 — Longus colli; 30 — Ascending cervical artery; 31 — External jugular vein; 32 — Spinal nerves; 33 — Vertebral artery; 34 — Vertebral body; 35 — Subarachnoid space; Leptomeningeal space; 36 — Epidural space; 37 — Periosteum; 38 — Spinalis; 39 — Spinal dura
mater; 40 — Cervical vertebra [CIV], spinous process
