WordNet

a conduit that resembles a bridge but carries water over a valley

PrepTutorEJDIC

送水路,水路橋

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/02 18:29:25」(JST)

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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

Development

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]

Function

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.

References

^ Le, Tao; Bhushan, Vikas; Vasan, Neil (2010). First Aid for the USMLE Step 1: 2010 20th Anniversary Edition. USA: The McGraw-Hill Companies, Inc. p. 126. ISBN 978-0-07-163340-6.

External links

Atlas image: n2a3p2 at the University of Michigan Health System

Additional images

Transverse section through mid-brain; number 2 indicates the cerebral aqueduct.
Transverse section of mid-brain at level of inferior colliculi.
Transverse section of mid-brain at level of superior colliculi.
MRI section of mid-brain.
Median sagittal section of brain.
Scheme showing relations of the ventricles to the surface of the brain.
Cerebral aqueduct
Cerebral aqueduct
Cerebral peduncle, optic chasm, cerebral aqueduct. Inferior view. Deep dissection.
Cerebral peduncle, optic chasm, cerebral aqueduct. Inferior view. Deep dissection.
Cerebrum. Inferior view.Deep dissection

UpToDate Contents

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English Journal

Relationship of age with the size of the interventricular foramina and aqueductus sylvii: a morphometric evaluation.

Akyer SP, Cagirici S, Ozdemir MB.
Neurological research.Neurol Res.2014 Oct;36(10):878-81. doi: 10.1179/1743132814Y.0000000359. Epub 2014 Apr 1.
OBJECTIVES: The ventricular system is an essential part of the brain. Various pathologies directly or indirectly affect the size of this system. Morphometric analysis of the cerebral ventricular system is important for evaluating changes due to growth, aging, and intrinsic and extrinsic pathologies.
PMID 24684521

New anatomical simulator for pediatric neuroendoscopic practice.

Coelho G1, Zymberg S, Lyra M, Zanon N, Warf B.
Child's nervous system : ChNS : official journal of the International Society for Pediatric Neurosurgery.Childs Nerv Syst.2014 Sep 3. [Epub ahead of print]
INTRODUCTION: The practice of neuroendoscopic procedures requires many years of training to obtain the adequate skills to perform these operations safely. In this study, we present a new pediatric neuroendoscopic simulator that facilitates training.DESCRIPTION OF THE SIMULATOR: This realistic simula
PMID 25183391

The anterior transcallosal approach to a cerebral aqueduct tumor: a 3-dimensional operative video.

Goga C1, Türe U.
Neurosurgery.Neurosurgery.2014 Sep;10 Suppl 3:492; discussion 492. doi: 10.1227/NEU.0000000000000439.
PMID 24871146

Japanese Journal

Induction of the Hydrocephalus by the Intraventricular Injection of Aurintricarboxylic Acid in Mice Exo Utero

玉川実 [他],KEINO Hiromi,TANIGUCHI Masahiko,MORITA Jiro,NARUSE Ichiro
先天異常 34(4), 345-352, 1994-12-30
NAID 110002786146

「中脳水道」

Cerebral aqueduct
	Section through superior colliculus showing path of oculomotor nerve.
	Drawing of a cast of the ventricular cavities, viewed from the side.
Details
Identifiers
Latin	aqueductus mesencephali (cerebri).; aqueductus Sylvii
MeSH	A08.186.211.132.659.822.187
NeuroNames	hier-500
NeuroLex ID	Cerebral aqueduct
	Anatomical terms of neuroanatomy [edit on Wikidata]