1 Mandible
2 Depressor anguli oris muscle
3 Mylohyoid muscle
4 Digastric muscle (anterior belly)
5 Geniohyoid muscle
6 Hyoid bone (body)
7 Epiglottic vallecula
8 Hyoid bone (greater horn)
9 Epiglottis
10 Submandibular gland
11 Hypopharynx
12 Inferior constrictor muscle of pharynx
13 Piriform recess
14 Longus colli muscle
15 Retromandibular vein
16 Superior thyroid artery
17 Platysma
18 Longus capitis muscle
19 Common carotid artery (bifurcation)
20 Vagus nerve (X)
21 Internal jugular vein
22 Spinal nerve (C3)
23 External jugular vein
24 Spinal nerve (C2)
25 Vertebral artery
26 Sternocleidomastoid muscle
27 Spinal nerve root (C4)
28 Intervertebral space (C3/C4)
29 Zygapophysial joint
30 Spinal cord
31 Levator scapulae muscle
32 Ligamentum flavum
33 Deep cervical veins
34 Posterior arch of C3 vertebra
35 Semispinalis capitis muscle
36 Spinalis cervicis muscle
37 Trapezius muscle
38 Semispinalis cervicis muscle
39 Splenius capitis muscle
40 Nuchal ligament
2 Depressor anguli oris muscle
3 Mylohyoid muscle
4 Digastric muscle (anterior belly)
5 Geniohyoid muscle
6 Hyoid bone (body)
7 Epiglottic vallecula
8 Hyoid bone (greater horn)
9 Epiglottis
10 Submandibular gland
11 Hypopharynx
12 Inferior constrictor muscle of pharynx
13 Piriform recess
14 Longus colli muscle
15 Retromandibular vein
16 Superior thyroid artery
17 Platysma
18 Longus capitis muscle
19 Common carotid artery (bifurcation)
20 Vagus nerve (X)
21 Internal jugular vein
22 Spinal nerve (C3)
23 External jugular vein
24 Spinal nerve (C2)
25 Vertebral artery
26 Sternocleidomastoid muscle
27 Spinal nerve root (C4)
28 Intervertebral space (C3/C4)
29 Zygapophysial joint
30 Spinal cord
31 Levator scapulae muscle
32 Ligamentum flavum
33 Deep cervical veins
34 Posterior arch of C3 vertebra
35 Semispinalis capitis muscle
36 Spinalis cervicis muscle
37 Trapezius muscle
38 Semispinalis cervicis muscle
39 Splenius capitis muscle
40 Nuchal ligament