摘要
应用动-静脉连续灌注与厚切片透明法,在手术显微镜下观测了60侧国人脑干(中脑和延髓)外部动脉和18侧内部动脉的来源、支数、行程、吻合、穿入点与分布范围。脑干动脉可分成前内群、前外群、外侧群和后群。各群动脉都有许多不同的来源,其穿入脑实质的穿入点,显示有集中的密集穿入区。中脑动脉的密集穿入区是脚间窝和大脑脚外侧沟;延髓是前正中裂和橄榄后沟。脑干表面存在纤细的软膜动脉网。在中脑和延髓关闭部,内部动脉呈向心性行走;在延髓开放部则行向第四脑室底。各群动脉的管径由前向后逐次减小,并均有较恒定的供血区。
The continuous artery-vein infusion method was used for the study of the origin,number,course,anastomosis,point of penetration and distribution of external arteries on 60 sides and internal arteries on 18 sides of the brain stem(mesencepha-lon and medulla oblongata)in Chinese under magnifiers(10-16×).The arteries of the brain stem can be divided into four groups:the anteromedial,anterolateral,lateral and posterior arteries.Each group originates from several different arteries.The spot where external arteries penetrate into the substance of brain stem is called the point of penetration,several points of penetration concentrating together make the dense penetrating area.The dense penetrating areas on mesencephalon are the interpeduncular fossa and sulcus lateralis and those on the medulla oblongata are the fissurae mediana anterior and sulcus posterior to olive.There are fine arterial networks in the pia mater of the brain stem.In the mesencephalon and the closed portion of the medulla oblongata,the internal arteries traverse centripetally while in the open portion of the medulla oblongata,they course towards the floor of the fourth ventricle.The calibre of arteries in each group decreases anteroposteriorly.A comparatively constant blood supply area is available to each group.
作者
吴光明
袁龙庆
曾司鲁
Wu Guangming;Yuan Longqing;Zeng Silu(Department of Anatomy,Jiangxi Medical College,Nanchang)
出处
《解剖学报》
CAS
1988年第2期123-131,共9页
Acta Anatomica Sinica
关键词
脑干
中脑
延髓
动脉
显微外科解剖
Brain stem
Mesencephalon
Medulla oblongata
Artery
Microsurgieal anatomy
