Dissection of head and neck from a posterior approach

Relations of facial, vagus, accessory, hypoglossal and internal carotid nerves; internal jugular vein

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Image #81-3
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Legend Image
Dissection of head and neck from a posterior approach
Relations of facial, vagus, accessory, hypoglossal and internal carotid nerves; internal jugular vein
The accessory nerve has been reflected anteriorly to show its communication with the vagus nerve.
1 . Posterior semicircular canal
2 . Transverse sinus (sigmoid portion)
3 . Mastoid cells
4 . Facial nerve (VII) emerging from stylomastoid foramen
5 . Superior bulb of jugular vein (internal surface)
6 . Upper pointer: Internal branch accessory nerve Lower pointer: External branch accessory nerve
7 . Retromandibular process parotid gland
8 . Styloid process temporal bone (covered by periosteum)
9 . Posterior belly of digastric muscle
10 . Internal jugular vein
11 . Digastric branch of facial nerve
12 . Tendon of longissimus capitis muscle (cut across)
13 . Occipital artery
14 . Vestibulocochlear nerve (VIII)
15 . Petro-occipital synchondrosis
16 . Accessory nerve (XI) (reflected anteriorly)
17 . Jugular ganglion of vagus nerve (X)
18 . Lateral part of occipital bone (cut across)
19 . Hypoglossal nerve (XII)
20 . Upper pointer: Ascending pharyngeal artery Lower pointer: Alar fascia
21 . Longus capitis muscle
22 . Internal carotid nerve
23 . Internal carotid artery
24 . Vagus nerve (X)