1 Glottis
2 Cricoid cartilage
3 Sternohyoid muscle
4 Arytenoid cartilage
5 Vocalis muscle
6 Anterior jugular vein
7 Omohyoid muscle
8 Longus colli muscle
9 Thyroid cartilage (lamina)
10 Longus capitis muscle
11 Thyrohyoid muscle
12 Platysma
13 Thyroid gland
14 Sternocleidomastoid muscle
15 Common carotid artery
16 Spinal nerves (C4 and C5)
17 Internal jugular vein
18 Vertebral artery
19 External jugular vein
20 Spinal nerve (C6)
21 Phrenic nerve
22 Longissimus capitis muscle
23 Vagus nerve (X)
24 Zygapophysial joint
25 Middle scalene muscle
26 Longissimus cervicis muscle
27 Anterior scalene muscle
28 Semispinalis capitis muscle
29 Posterior scalene muscle
30 Splenius cervicis muscle and splenius capitis muscle
31 Levator scapulae muscle
32 Spinalis cervicis muscle and multifidus muscle
33 Posterior cricoarytenoid muscle
34 Semispinalis cervicis muscle
35 Hypopharynx/esophagus
36 Spinal cord
37 Trapezius muscle
38 Cervical vertebra C5
39 Inferior constrictor muscle of pharynx
40 Nerve root (C7)
2 Cricoid cartilage
3 Sternohyoid muscle
4 Arytenoid cartilage
5 Vocalis muscle
6 Anterior jugular vein
7 Omohyoid muscle
8 Longus colli muscle
9 Thyroid cartilage (lamina)
10 Longus capitis muscle
11 Thyrohyoid muscle
12 Platysma
13 Thyroid gland
14 Sternocleidomastoid muscle
15 Common carotid artery
16 Spinal nerves (C4 and C5)
17 Internal jugular vein
18 Vertebral artery
19 External jugular vein
20 Spinal nerve (C6)
21 Phrenic nerve
22 Longissimus capitis muscle
23 Vagus nerve (X)
24 Zygapophysial joint
25 Middle scalene muscle
26 Longissimus cervicis muscle
27 Anterior scalene muscle
28 Semispinalis capitis muscle
29 Posterior scalene muscle
30 Splenius cervicis muscle and splenius capitis muscle
31 Levator scapulae muscle
32 Spinalis cervicis muscle and multifidus muscle
33 Posterior cricoarytenoid muscle
34 Semispinalis cervicis muscle
35 Hypopharynx/esophagus
36 Spinal cord
37 Trapezius muscle
38 Cervical vertebra C5
39 Inferior constrictor muscle of pharynx
40 Nerve root (C7)