NETTER - Neuroscience Flash Cards

Anatomy of the Fourth Ventricle:
Lateral View
1. Habenular commissure
2. Cerebral aqueduct
3. Superior medullary velum
4. Inferior medullary velum
5. Choroid plexus of fourth ventricle
6. Central canal of spinal cord
7. Median aperture (foramen of Magendie)
8. Fourth ventricle
9. Posterior commissure
10. Interventricular foramen of Monro
11. Choroid plexus of third ventricle
Comment: The fourth ventricle is a rhomboid-shaped structure
in cross section, receiving cerebrospinal fluid from the cerebral
aqueduct above and providing exit of CSF into the subarachnoid
space through the paired lateral foramina of Luschka and the midline
foramen of Magendie. Structurally, the roof and dorsolateral walls
of the fourth ventricle are adjacent to the deep cerebellar nuclei and
zones of the cerebellum itself. Just beneath the floor of the fourth
ventricle are the tubercles, eminences, colliculi, and areas associated
with the nuclei and associated connections of the cranial nerve
nuclei. On the floor of the fourth ventricle is the sulcus limitans, the
developmental demarcation of the alar plate laterally (sensory nuclei
and structures) and the basal plate medially (motor and autonomic
nuclei and structures).
Overview of the Nervous System See book 6.4