De Araujo A C P, Campos R
School of Veterinary Medicine, Federal University of Rio Grande do Sul, Porto Alegre, Brazil.
Anat Histol Embryol. 2009 Feb;38(1):12-7. doi: 10.1111/j.1439-0264.2008.00885.x. Epub 2008 Sep 10.
The aim of the present study was to analyse thirty chinchilla (Chinchilla lanigera) brains, injected with latex, and to systematize and describe the distribution and the vascularization territories of the middle cerebral artery. This long vessel, after it has originated from the terminal branch of the basilar artery, formed the following collateral branches: rostral, caudal and striated (perforating) central branches. After crossing the lateral rhinal sulcus, the middle cerebral artery emitted a sequence of rostral and caudal convex hemispheric cortical collateral branches on the convex surface of the cerebral hemisphere to the frontal, parietal, temporal and occipital lobes. Among the rostral convex hemispheric branches, a trunk was observed, which reached the frontal and parietal lobes and, in a few cases, the occipital lobe. The vascular territory of the chinchilla's middle cerebral artery included, in the cerebral hemisphere basis, the lateral cerebral fossa, the caudal third of the olfactory trigone, the rostral two-thirds of the piriform lobe, the lateral olfactory tract, and most of the convex surface of the cerebral hemisphere, except for a strip between the cerebral longitudinal fissure and the vallecula, which extended from the rostral to the caudal poles bordering the cerebral transverse fissure.
本研究的目的是分析30个注射了乳胶的毛丝鼠（Chinchilla lanigera）大脑，对大脑中动脉的分布和血管供应区域进行系统化和描述。这条长血管从基底动脉的终末分支发出后，形成了以下侧支： Rostral、caudal和striated（穿通）中央支。大脑中动脉穿过外侧嗅沟后，在大脑半球凸面上向额叶、顶叶、颞叶和枕叶发出一系列Rostral和caudal凸半球皮质侧支。在Rostral凸半球分支中，观察到一条主干，它到达额叶和顶叶，少数情况下到达枕叶。毛丝鼠大脑中动脉的血管供应区域在大脑半球基底包括大脑外侧窝、嗅三角的尾侧三分之一、梨状叶的头侧三分之二、外侧嗅束以及大脑半球的大部分凸面，但不包括大脑纵裂和谷之间的一条从脑横裂的头极到尾极延伸的条带。
