1 Larynx
2 Sternohyoid muscle
3 Vocalis muscle (vocal cord)
4 Thyroid cartilage (lamina)
5 Thyrohyoid muscle
6 Thyroid gland
7 Arytenoid cartilage
8 Anterior jugular vein
9 Transverse arytenoid muscle
10 Platysma
11 Common carotid artery
12 Sternocleidomastoid muscle
13 Internal jugular vein
14 Phrenic muscle
15 Vagus nerve (X)
16 Longus capitis muscle
17 External jugular vein
18 Anterior scalene muscle
19 Hypopharynx/esophagus
20 Middle scalene muscle
21 Spinal nerves (C4 and C5)
22 Posterior scalene muscle
23 Longus colli muscle
24 Spinal nerve root (C6)
25 Longissimus capitis muscle
26 Longissimus cervicis muscle
27 Vertebral artery
28 Splenius cervicis muscle
29 Levator scapulae muscle
30 Semispinalis capitis muscle
31 Inferior constrictor muscle of pharynx
32 Intervertebral space (C5/C6)
33 Spinal cord
34 Spinalis cervicis muscle and multifidus muscle
35 Ligamentum flavum
36 Posterior vertebral arch
37 Splenius capitis muscle
38 Trapezius muscle
39 Semispinalis cervicis muscle