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Leptomeningeal collateral circulation : ウィキペディア英語版 | Leptomeningeal collateral circulation The term leptomeningeal refers to the two deep layers of the meninges — the pia mater and the arachnoid mater. The leptomeningeal collateral circulation is a network of blood vessels supplying the brain that follows a diffuse course over the superficial surface of the brain. ==Leptomeningeal Collateral Circulation and Cerebrovascular Accidents== If the middle cerebral artery is occluded during a CVA (or stroke), there is dramatic loss of blood flow to the area of the brain supplied by this artery (the lateral surfaces of the frontal, parietal and temporal lobes, including the primary motor and sensory cortexes).〔Neuroanatomy: An Illustrated Color Text. 3rd Edition. Crossman & Neary. Published by Elsevier.〕 The leptomeningeal collateral circulation allows a very limited degree of compensation for this. However, this mild compensatory effect is nowhere near adequate - a CVA is a very serious medical emergency.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Leptomeningeal collateral circulation」の詳細全文を読む
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