摘要
本文报道应用微血管腐蚀铸型扫描电镜技术,观察了2例3岁男童的翼内肌和咬肌的微血管系统。在扫描电镜下观察,可见微动脉的分支分为三种类型;1.树叉样边分支;2.对称性分支;3.细丛状分支。本文描述了动脉和静脉铸型表面上的内皮细胞核压痕的差别;前毛细血管括约肌压痕的形态特征;拱形动脉的Ⅱ级吻合形式及其生理学意义。毛细血管铸型的直径为5.6±1.9μm。2~3条静脉湍毛细血管汇合成毛细血管后微静脉。可见1条独立的毛细血管直接注入微静脉干。上述形态学因素在骨胳肌的微循环方面,有着重要的生理学意义。
The authors used a microvascular corrosion cast/scanning electron microscopy(SEM)technique to study the microvascular bed of the muscles of the medial pterygoid and masseter in two normal babies.The cast were prepared by perfusing the microvascular vessels with methyl methacrylate.Under SEM,the patterns of branches of the arteriole are:1.tree like ramifications;2.symmetrical branching;3.fine plexiform branching.Moreover,the casts of arterial and venous vessels showed on their surfaces the typical imprint of the endothelial lining.Therefore,the venous vessels could be easily identified by the round nuclei of the endothelial cells of the venous vessels.On the other side,arteries and arterioles displayed spindle shaped nuclear imprints,oriented along the direction of the vessel.The morphological and functional characterization of the imprint of the precapillary sphincter and the two-grade anastomoses of the arcade arteries.The diameter of the capillary casts(mean±SE)was 5.6±1.9μm.Two or three capillaries join together to form a postcapillary venules,sometimes a single capillary reaches a major venous trunk was observed.These structural features were considered to play an important physiological role in the microcirculation in skeletal muscle.
作者
王有伟
陈以慈
冉炜
Wang Youwei;Chen Yici;Ran Wei(Department of Anthropology,China Medical College,Shenyang;Department of Anatomy,Sun Yat-Sen University of Medical Sciences,Guangzhou)
出处
《解剖学报》
CAS
1988年第2期113-115,225,共4页
Acta Anatomica Sinica
关键词
微血管
拱型动脉
腐蚀铸型
扫描电镜
Microvasculature
Arcade artery
Corrosion cast
Scanning electron microscopy
