1 Temporal muscle
2 Petrous part of temporal bone
3 External acoustic meatus
4 Tympanic cavity
5 Occipital condyle
6 Clivus
7 Atlanto-occipital joint
8 Styloid process
9 Accessory nerve (XI) and hypoglossus nerve (XII)
10 Stylopharyngeus muscle
11 Atlas (lateral mass)
12 Alar ligaments
13 Dens of axis
14 Atlas (transverse process)
15 Vagus nerve (X)
16 Vertebral artery
17 Internal jugular vein
18 Parotid gland
19 Obliquus capitis inferior muscle
20 Stylohyoid muscle
21 Axis (body)
22 Atlanto-axial joint
23 Spinal nerve roots C3–C6
24 Digastric muscle
25 Middle scalene muscle
26 Sternocleidomastoid muscle
27 Spinal cord
28 Articular processes C4–C6
29 Spinal nerve root C8
30 Zygapophysial joint
31 First rib
32 Second rib
33 Posterior scalene muscle
34 Lung (left)
35 Esophagus
2 Petrous part of temporal bone
3 External acoustic meatus
4 Tympanic cavity
5 Occipital condyle
6 Clivus
7 Atlanto-occipital joint
8 Styloid process
9 Accessory nerve (XI) and hypoglossus nerve (XII)
10 Stylopharyngeus muscle
11 Atlas (lateral mass)
12 Alar ligaments
13 Dens of axis
14 Atlas (transverse process)
15 Vagus nerve (X)
16 Vertebral artery
17 Internal jugular vein
18 Parotid gland
19 Obliquus capitis inferior muscle
20 Stylohyoid muscle
21 Axis (body)
22 Atlanto-axial joint
23 Spinal nerve roots C3–C6
24 Digastric muscle
25 Middle scalene muscle
26 Sternocleidomastoid muscle
27 Spinal cord
28 Articular processes C4–C6
29 Spinal nerve root C8
30 Zygapophysial joint
31 First rib
32 Second rib
33 Posterior scalene muscle
34 Lung (left)
35 Esophagus