- Cerebral aqueduct
Brain: Cerebral aqueduct Section through superior colliculus showing path of oculomotor nerve. Drawing of a cast of the ventricular cavities, viewed from the side. Latin aqueductus mesencephali (cerebri) Gray's subject #188 806 NeuroNames hier-500 MeSH Cerebral+Aqueduct
The mesencephalic duct, also known as the aqueductus mesencephali, aqueduct of Sylvius or the cerebral aqueduct, contains cerebrospinal fluid (CSF), is within the mesencephalon (or midbrain) and connects the third ventricle in the diencephalon to the fourth ventricle in the mesencephalon, which is between the pons and cerebellum.
The cerebral aqueduct, similarly to other parts of the ventricular system of the brain, develops from the central canal of the neural tube. Specifically, the duct originates from the portion of the neural tube that is present in the developing mesencephalon, hence the name "mesencephalic duct." 
A blockage in this duct is a cause of hydrocephalus.
Human brain: mesencephalon (midbrain) (TA A14.1.06, GA 9.800) Tectum
(Ventral)White: Sensory/ascendingGrey: otherCerebral aqueductBaseSurface
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cerebral aqueduct — n AQUEDUCT OF SYLVIUS * * * (aqueduct of Sylvius) the narrow channel, containing cerebrospinal fluid, that connects the third and fourth ventricle of the brain. * * * aqueductus mesencephali … Medical dictionary
cerebral aqueduct — aqueduct of Sylvius the narrow channel, containing cerebrospinal fluid, that connects the third and fourth ventricles of the brain … The new mediacal dictionary
cerebral aqueduct — noun The channel in the brain which connects the third ventricle to the fourth ventricle. Also called the aqueduct of sylvius. It is surrounded by the periaqueductal gray … Wiktionary
cerebral aqueduct — noun a canal connecting the third and fourth ventricles • Syn: ↑Sylvian aqueduct, ↑aqueductus cerebri • Hypernyms: ↑duct, ↑epithelial duct, ↑canal, ↑channel … Useful english dictionary
Водопровод Церебральный (Cerebral Aqueduct), Водопровод Сильвиев (Aqueduct Of Sylvius) — узкий канал, соединяющий третий и четвертый желудочки головного мозга, содержащий спинномозговую жидкость. Источник: Медицинский словарь … Медицинские термины
aqueduct of Sylvius — cerebral aqueduct … The new mediacal dictionary
Aqueduct of Sylvius — A canal that communicates between the third and fourth ventricles in a system of four communicating cavities within the brain that are continuous with the central canal of the spinal cord. The four ventricles consist of the two lateral ventricles … Medical dictionary
aqueduct — A conduit or canal. SYN: aqueductus. [L. aquaeductus] cerebral a. an ependyma lined canal in the mesencephalon about 20 mm long, connecting the third to the fourth ventricle. SYN: aqueductus mesencephali [TA], aqueductus cerebri, a. of cerebrum,… … Medical dictionary
Aqueduct (disambiguation) — An aqueduct is *an artificial (man made) channel that is constructed to convey water from one location to another. *a bridge that holds a water channel either for irrigation or transport *a channel in the body that carries a natural body fluid,… … Wikipedia
Cerebral peduncle — Brain: Cerebral peduncle Superficial dissection of brain stem. Ventral view. ( Cerebral peduncle visible in red at center right.) … Wikipedia