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Bassett Collection of Stereoscopic Images of Human Anatomy

Dissection of left ear from posterior aspect

Posterior semicircular canal; jugular foramen

Image #62-3

KEYWORDS: Bones cartilage joints, Ear.

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Dissection of left ear from posterior aspect
Posterior semicircular canal; jugular foramen
1 . Arcuate eminence
2 . Attached edge of tentorium cerebelli
3 . Left pointer: Posterior semicircular canal Right pointer: Opening of crus simplex superior semicircular canal
4 . Common crus
5 . Upper pointer: Vestibule (part of membrane of utricle visible within) Lower pointer: Posterior osseous ampulla
6 . Transverse sinus (sigmoid part)
7 . Jugular ganglion of vagus nerve (X)
8 . Transverse sinus entering jugular foramen
9 . Condyloid emissary
10 . Trigeminal nerve (V)
11 . Facial nerve (VII)
12 . Vestibulocochlear nerve (VIII) (cochlear part)
13 . Vestibulocochlear nerve (VIII) (vestibular part)
14 . Vestibular ganglion (seen through window cut in internal acoustic meatus)
15 . Cochlear canaliculus (cut open)
16 . Inferior petrosal sinus
17 . Glossopharyngeal nerve (IX)
18 . Vagus nerve (X)
19 . Accessory nerve (XI)
20 . Bony margin of foramen magnum