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Cerebral aqueduct

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Title: Cerebral aqueduct  
Author: World Heritage Encyclopedia
Language: English
Subject: Ventricular system, Hydrocephalus, Dorsal raphe nucleus, Corticopontine fibers, Trochlear nucleus
Collection: Cerebrum, Neuroanatomy
Publisher: World Heritage Encyclopedia

Cerebral aqueduct

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).
aqueductus Sylvii
MeSH A08.
NeuroNames hier-500
NeuroLex ID Cerebral aqueduct
Anatomical terms of neuroanatomy

The cerebral aqueduct, also known as the aqueductus mesencephali, mesencephalic duct, or the aqueduct of Sylvius is within the mesencephalon (or midbrain), contains cerebrospinal fluid (CSF), and connects the third ventricle in the diencephalon to the fourth ventricle within the region of the mesencephalon and metencephalon, located dorsal to the pons and ventral to the cerebellum.


  • Structure 1
    • Development 1.1
  • Function 2
  • Clinical significance 3
  • See also 4
  • References 5
  • External links 6
  • Additional images 7



The cerebral aqueduct, as other parts of the ventricular system of the brain, develops from the central canal of the neural tube, and it originates from the portion of the neural tube that is present in the developing mesencephalon, hence the name "mesencephalic duct."[1]


The aqueduct functions to connect the third and fourth ventricles and to ensure the flow of cerebrospinal fluid through these areas.

Clinical significance

Aqueductal stenosis, a narrowing of the cerebral aqueduct, obstructs the flow of CSF and has been associated with non-communicating hydrocephalus. Such narrowing can be congenital, arise via tumor compression, or through cyclical gliosis secondary to an initial partial obstruction.

See also


  1. ^ Le, Tao; Bhushan, Vikas; Vasan, Neil (2010).  

External links

  • Atlas image: n2a3p2 at the University of Michigan Health System

Additional images

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