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Serial transverse sections of the brain stem

Junction of medulla and pons.

Image #30-2

KEYWORDS: Brain, Cerebellum, Medulla, Midbrain, Pons, Ventricules.

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Higher resolution images are available for a fee. Contact Drew Bourn, PhD, MLIS.

Serial transverse sections of the brain stem

Junction of medulla and pons.

This section cuts across the mid-portion of the fourth ventricle and the nodulus at a level 3.5 mm. higher than the previous section. The cerebellar nuclei are prominent and the beginnings of the brachium conjunctivum (15) visible. The restiform bodies are extending upwards into the cerebellum and fibers of the juxtarestiform body are passing from the acoustic area (5) toward the cerebellum at (4).

1 .	Lingual gyrus
2 .	Nodulus
3 .	Fourth ventricle
4 .	Juxtarestiform tract
5 .	Area acustica and medial longitudinal fasciculus
6 .	Ventral cochlear nucleus
7 .	Medial lemniscus
8 .	Pontobulbar body
9 .	Pyramid (medulla oblongata)
10 .	Pons and foramen caecum
11 .	Fusiform gyrus
12 .	Uncus (hippocampal gyrus)
13 .	Emboliform nucleus
14 .	Fastigial nucleus
15 .	Brachium conjunctivum (superior cerebellar peduncle)
16 .	Dentate nucleus
17 .	Brachium pontis (middle cerebellar peduncle)
18 .	Restiform body (inferior cerebellar peduncle)
19 .	Spinal trigeminal tract
20 .	Vestibulocochlear nerve (VII) vestibular part
21 .	Facial nerve (VII)
22 .	Quadrangular lobule
23 .	Trigeminal nerve (V)
24 .	Nucleus facial nerve
25 .	Central tegmental tract (tegmental olivary tract)
26 .	Anterior perforated substance
27 .	Anterior cerebral artery (cut across)