Cerebral aqueduct

A short canal in the cerebrum, lined with ependymal cells and leading downward through the mesencephalon from the third to the fourth ventricle. Also called sylvian aqueduct.

Cerebral aqueduct.

The noun has one meaning:

Meaning #1: a canal connecting the third and fourth ventricles
  Synonyms: Sylvian aqueduct, aqueductus cerebri

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, which is between the pons and cerebellum.

Contents 1 Pathology 2 See also 3 External links 4 Additional images

Pathology

A blockage in this duct is a cause of hydrocephalus.

See also

• List of regions in the human brain

External links

• Atlas of anatomy at UMich n2a3p2

Additional images

Coronal section through mid-brain.	Transverse section of mid-brain at level of inferior colliculi.	Transverse section of mid-brain at level of superior colliculi.	Median sagittal section of brain.
Scheme showing relations of the ventricles to the surface of the brain.

v • d • e Human brain: mesencephalon (midbrain) (TA A14.1.06, GA 9.800) Tectum (Dorsal) Surface Subcommissural organ Other Corpora quadrigemina: Inferior colliculi (Brachium of inferior colliculus), Superior colliculi (Brachium of superior colliculus) Pretectum Peduncle (Ventral) Peduncle tegmentum Sensory/ascending lemnisci (Medial, Lateral) · Ascending MLF Motor/descending Rubrospinal tract · Rubro-olivary tract · Descending MLF (riMLF) Other Periaqueductal gray (Dorsal raphe nucleus) Ventral tegmentum • Pedunculopontine nucleus • Red nucleus cranial nuclei: GSA (V: Mesencephalic) - GSE (III: Oculomotor, IV: Trochlear) - GVE (III: Edinger-Westphal) Interstitial cell of Cajal Superior cerebellar peduncles (Decussation of superior cerebellar peduncle) Ventricular system Cerebral aqueduct Peduncle base Motor/descending Cerebral crus: Corticospinal tract · Corticobulbar tract · Corticopontine tract/Frontopontine fibers/Temporopontine fibers Surface Interpeduncular fossa Other Substantia nigra (Pars compacta, Pars reticulata)

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