Sección de Neuroradiología, Hospital Universitari de Bellvitge, Departamento de Ciencias Morfológicas. Universidad Autónoma de Barcelona, Barcelona, Spain
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Vein of Galen
- The medial vein of the prosencephalon is a midline temporary venous channel connecting choroid plexuses of both hemispheres with the (right) marginal sinus.
- As the choroid plexus of the third ventricle develops, the MVP is also used to drain it.
- The posterocaudal aspect of the MVP keeps connecting with the Marginal sinuns until around the third month of gestation.
- The venous dilatation of the MVP included into the habenulo-pineal plexus will develop into the vein of Galen.
- The straight sinus is a different venous channel, connecting later with the habenulo-pineal plexus and the vein of Galen.
Some Recent Findings
Human embryo (stage 22) developing cortex and blood supply
- A Functional Perspective on the Embryology and Anatomy of the Cerebral Blood Supply "The anatomy of the arterial system supplying blood to the brain can influence the development of arterial disease such as aneurysms, dolichoectasia and atherosclerosis. As the arteries supplying blood to the brain develop during embryogenesis, variation in their anatomy may occur and this variation may influence the development of arterial disease. Angiogenesis, which occurs mainly by sprouting of parent arteries, is the first stage at which variations can occur. At day 24 of embryological life, the internal carotid artery is the first artery to form and it provides all the blood required by the primitive brain. As the occipital region, brain stem and cerebellum enlarge; the internal carotid supply becomes insufficient, triggering the development of the posterior circulation. At this stage, the posterior circulation consists of a primitive mesh of arterial networks that originate from projection of penetrators from the distal carotid artery and more proximally from carotid-vertebrobasilar anastomoses. These anastomoses regress when the basilar artery and the vertebral arteries become independent from the internal carotid artery, but their persistence is not uncommon in adults (e.g., persistent trigeminal artery). Other common remnants of embryological development include fenestration or duplication (most commonly of the basilar artery), hypoplasia (typically of the posterior communicating artery) or agenesis (typically of the anterior communicating artery). Learning more about the hemodynamic consequence that these variants may have on the brain territories they supply may help understand better the underlying physiopathology of cerebral arterial remodeling and stroke in patients with these variants."
- Cerebral venous development in relation to developmental venous anomalies and Vein of Galen aneurysmal malformations "Cerebrovascular venous development and intracranial vascular malformations are extensive topics for which volumes of text may be devoted. However, a basic knowledge of the embryology of cerebral venous system and venous architecture is essential for understanding of cerebral vascular malformations. The aim of this work is to provide the reader with a brief overview of the development of the cranial venous anatomy. We will highlight the superficial and deep venous systems with special attention to developmental venous anomalies and vein of Galen aneurysmal malformations."
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<pubmed limit=5>Vein of Galen</pubmed>
- ↑ <pubmed>26060802 </pubmed>
- ↑ <pubmed>21596280</pubmed>
Cite this page: Hill, M.A. (2021, June 19) Embryology Maria Angeles. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/User:Maria_Angeles
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