X CLOSE

Exploration of the meninges and brain in situ

Brain stem and cranial nerves

For permissions information regarding the use of these images, please contact Drew Bourn at dbourn@stanford.edu

Image #3-6
Bassett ImageDiagram Image
Legend Image
Exploration of the meninges and brain in situ
Brain stem and cranial nerves
The cerebellar peduncles (25, 26, 28) have been cut through and the left cerebellar hemisphere removed from the posterior cranial fossa. The tela chorioidea and choroid plexus (13) of the fourth ventricle were left in place. The ventricle is thus only partially opened. Choroid plexus covers the rootlets of the ninth and tenth nerves as they emerge from the medulla.
1 . Optic nerve (II) (cut across)
2 . Inferior cerebral vein
3 . Oculomotor nerve (III)
4 . Branches of cerebral artery posterior to brain stem (lateral central branches)
5 . Superior cerebellar artery (cut across)
6 . Trigeminal nerve (V)
7 . Cerebellar vein (petrosal vein)
8 . Superior petrosal sinus (opened)
9 . Facial nerve (VII) and vestibulocochlear nerve (VIII)
10 . Anterior inferior cerebellar artery (cut across)
11 . Transverse sinus (cut across)
12 . Glossopharyngeal nerve (IX), vagus nerve (X), and accessory nerve (Xl)
13 . Choroid plexus fourth ventricle
14 . Spinal root of accessory nerve (XI) lying against dura
15 . Roots hypoglossal nerve (XII)
16 . Verterbral artery left (ascending through cerebellomedullary cistern beneath medulla)
17 . Medulla oblongata
18 . Margin of foramen magnum (cut across)
19 . Vertebral artery passing medially across arch of atlas
20 . Mesencephalon (cut across)
21 . Superior cerebellar vein
22 . Inferior colliculus
23 . Trochlear nerve (IV)
24 . Cerebellar lingula
25 . Superior cerebellar peduncle (cut across below pointer)
26 . Brachium pontis (middle cerebellar peduncle) (cut across)
27 . Fourth ventricle
28 . Inferior cerebellar peduncle(cut across)
29 . Cerebellum (sagittal section)
30 . Straight sinus (opened)
31 . Fourth ventricle (visible through medial aperture fourth ventricle [foramen of Magendie])
32 . Posterior inferior cerebellar artery right
33 . Cerebellar tonsil
34 . Clava
35 . Occipital sinus
36 . Falx cerebelli
37 . Root of cervical nerve (II)