Elsevier

Brain Research Bulletin

Volume 7, Issue 5, November 1981, Pages 519-579
Brain Research Bulletin

Cortical blood vessels of the human brain

https://doi.org/10.1016/0361-9230(81)90007-1Get rights and content

Abstract

The study is divided into two parts, (a) Superficial or pial vessels: Arterioles and venules at the gyrus surface as well as their mode of penetration into or emergence from nervous tissue is described. The absence of pial capillaries is noted. Arterial and venous anastomoses are described whereas arteriovenous anastomoses were not encountered. In particular, the relationship of superficial vessels to the arachnoid was studied, (b) Intracortical vessels: Arteries and veins were divided into 5 groups according to their degree of cortical penetration. Considering its density, the vascular network of the cortex was divided into 4 vascular layers. A correlation between these layers and the cellular layers was established. Problems in distinguishing between arteries and veins, the geometric disposition of cortical vessels, different types of anastomoses and particular vascular features whose significance remains unclear, are discussed.

Résumé

Ce travail est divisé en deux chapitres. (a) Les vaisseaux superficiels ou pie-mériens: Les artérioles et les veinules de la surface des gyri sont décrites ainsi que leur mode de pénétration ou d'émergence dans le tissu nerveux; on constate I'absence de capillaires pie-mériens. Des anastomoses artérielles et veineuses ont été décrites tandis que des anastomoses artérioveineuses n'ont pas été recontrées. Les rapports des vaisseaux superficiels vis-à-vis de I'arachnoïde ont été particuliérement étudiés. (b) Les vaisseaux intracorticaux: Les arteres et les veines ont ete divisees en 5 groupes suivant leur degré de pénetration dans le cortex. La trame vasculaire du cortex, en tenant compte de sa densité, est répartie en 4 couches vasculaires dont la correlation avec les couches nerveuses a été établie. On a discuté ensuite les problèmes de distinction entre artères et veines, de repartition géométrique des vaisseaux dans le cortex, des différents types d'anastomoses et des images particulières dont la signification est encore obscure.

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