1
.
| Middle meningeal artery within middle cranial fossa |
2
.
| Arcuate eminence |
3
.
| Superior petrosal sinus |
4
.
| Internal acoustic meatus |
5
.
| Transverse sinus |
6
.
| Fibrous tissue protruding from external aperture of vestibular aqueduct |
7
.
| Transverse sinus (sigmoid portion) |
8
.
| Jugular ganglion of vagus nerve |
9
.
| Mastoid emissary |
10
.
| Basilar plexus |
11
.
| Trigeminal nerve (V) entering Meckel's cave |
12
.
| Abducens nerve (VI) |
13
.
| Facial nerve (VII) |
14
.
| Nervous intermedius of (VII) |
15
.
| Vestibulocochlear nerve (VIII) (upper pointer, cochlear part; lower pointer, vestibular part) |
16
.
| Inferior petrosal sinus |
17
.
| Glossopharyngeal nerve (IX) |
18
.
| Vagus nerve (X) |
19
.
| Bulbar root of accessory nerve (XI) |
20
.
| Spinal root of accessory nerve (XI) |
21
.
| Hypoglossal nerve (XII ) |
22
.
| Posterior longitudinal ligament |
23
.
| Upper pointer: Occipital sinus Lower pointer: Vertebral artery |