Aquaeductus mesencephali
The aqueductus mesencephali , also called aqueductus cerebri , aqueductus Sylvii or, more rarely, Sylvius or Sylvian aqueduct (after Franciscus Sylvius ), is part of the ventricular system of the brain and is therefore one of the internal liquor spaces .
anatomy
The aqueductus mesencephali runs through the mesencephalon (midbrain) and connects the III. with the IV cerebral ventricle . Ventrally, it is bounded by the tegmentum mesencephali ( midbrain hood ) and dorsally by the lamina tecti ( four-hill plate ). Like all internal cerebrospinal fluid spaces, it is lined by a single-layer, cubic epithelium called the ependyma , which is differentiated from the neuroepithelium during the embryonic development of the brain primordia. The entire structure is surrounded by periaqueductal gray ( substantia grisea periaquaeductalis ).
The aqueduct is one of the bottlenecks in the liquor system. Its occlusion or narrowing leads to outflow disorders of the liquor ( aqueduct stenosis ) and can lead to an internal hydrocephalus .
Individual evidence
- ↑ Bechmann, Ingo / Nitsch, Robert: Central nervous system, Systema nervosum centrale, brain, encephalon, and spinal cord, medulla spinalis, in: Fanghänel, Jürgen et al. (Ed.): Waldeyer. Human Anatomy, 17th edition, Berlin / New York 2003, p. 442.
- ↑ Monika von Düring, Rolf Dermietzel, Detlev Drenckhahn: nervous system. Meninges, ventricular lining, cerebrospinal fluid, in: Drenckhahn, Detlev (ed.): Benninghoff. Anatomy. Macroscopic anatomy, histology, embryology, cell biology, Vol. 2, 16th edition, Munich 2004, p. 278.