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目的 :了解豆纹动脉的来源与分布。方法 :显微解剖结合厚片迭加观测 4 0侧人类大脑半球。结果 :4 0侧大脑半球共有豆纹动脉 2 60条 ,平均每侧半球 6.50± 3.31条 ,区分为近侧、中间和远侧三群。它们分别起自大脑中动脉根部、主干或其皮质支。分布于外囊、内囊和基底核的不同部位 ,但彼此有重叠。依其在前穿支的穿入部位 ,又可分为内侧、外侧和中间三组。结论 :豆纹动脉恒定地参与尾核头背外侧部的血供 ,而且从其起源、穿入部位和分布来看 ,传统的内侧群应分为近侧群和中间群 :前者参与内侧组血管并分布于苍白球和内囊膝 ;后者参与外侧组血管并分布于壳的前极、内囊前肢及尾核头背外侧部。由于豆纹动脉的发出部位是动脉瘤的好发部位 ,构成了临床上其出血多见的解剖学基础
Objective: To understand the origin and distribution of bean-shaped artery. Methods: Micro-anatomical and thick slices were superimposed to observe 40 human cerebral hemispheres. Results: There were 2 60 lentigo arteries in 40 hemispheres with an average of 6.50 ± 3.31 hemispheres on each side, which were divided into three groups: proximal, middle and distal. They originate from the middle cerebral artery root, trunk or cortical branch. Distributed in the outer capsule, inner capsule and the different parts of the basal nucleus, but overlap with each other. According to the penetration site in the former through the branch, but also can be divided into the medial, lateral and the middle of the three groups. CONCLUSION: Leg veins are invariably involved in the blood supply to the lateral dorsal part of the caudate nucleus, and from its origin, site of invasion and distribution, the traditional medial group should be divided into proximal group and middle group. The former participates in the medial group And distributed in the globus pallidus and the internal capsule knees; the latter involved in the lateral group of blood vessels and distributed in the anterior shell of the shell, the forelimb of the internal capsule and the dorsal lateral part of the caudate nucleus. Due to the location of the lenticular artery is a good site for aneurysms, which constitutes an anatomical basis for its more common clinical bleeding