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Brain: Cerebral aqueduct
Section through superior colliculus showing path of oculomotor nerve.
Latin aqueductus mesencephali (cerebri)
Gray's subject #188 806
Part of
BrainInfo/UW hier-500
MeSH A08.

The cerebral aqueduct , also known as the aqueduct of Sylvius or the mesencephalic duct, is a canal containing cerebrospinal fluid (CSF), which lies within the mesencephalon (or midbrain) and connects the third ventricle in the diencephalon to the fourth ventricle, which is between the pons and cerebellum.

Pathology[edit | edit source]

A blockage in this duct is a cause of hydrocephalus.

See also[edit | edit source]

Additional images[edit | edit source]

Mesencephalon (midbrain)

cerebral peduncle: midbrain tegmentum (periaqueductal gray, ventral tegmentum, nucleus raphe dorsalis), pretectum, substantia nigra, red nucleus, pedunculopontine nucleus, medial longitudinal fasciculus, medial lemniscus, rubrospinal tract, lateral lemniscus

tectum: corpora quadrigemina, inferior colliculi, superior colliculi

cerebral aqueduct: oculomotor nucleus, trochlear nucleus, Edinger-Westphal nucleus

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