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Microvasculature of the human cerebral meninges
Author(s) -
aka Hiroko,
Akima Michio,
Nagayama Tadashi,
Hatori Tsutomu,
Zhang Zean,
Ihara Fumie
Publication year - 2003
Publication title -
neuropathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.701
H-Index - 61
eISSN - 1440-1789
pISSN - 0919-6544
DOI - 10.1046/j.1440-1789.2003.00487.x
Subject(s) - meninges , anatomy , cerebral arteries , artery , anastomosis , middle meningeal artery , medicine , blood flow , middle cerebral artery , blood vessel , circulatory system , ophthalmic artery , constriction , cortex (anatomy) , cerebral cortex , cardiology , biology , ischemia , pathology , neuroscience , surgery , embolization
In the present study, the human cerebral meninges were rich in blood vessels, but no capillaries were noted. The meningeal arteries ran over the veins where they crossed. Several arterial anastomoses existed on the cortical surface. The meningeal arteries were classified into four parts; the conducting artery approximately 700 µ m in diameter, distributing artery approximately 200 µ m in diameter, precortical artery approximately 60 µ m in diameter and cortical artery approximately 30–40 µ m in diameter. A single distributing artery supplied the area of approximately 3.5 × 2.0 mm on the brain surface. They further ramified into precortical arteries which stemmed cortical arteries. These precortical arteries had the distributing area of 1 mm 2 and this distributing area was the same size as the width of human ocular dominant column of the visual cortex. Constriction, like a sphincter, was observed at the bifurcation of the distributing arteries. The cerebral blood vessels, which regulated the blood flow and reacted to autonomic nerve stimuli, seemed to correspond to the distributing arteries.