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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。
This article reports the use of microvascular corrosion casting SEM, observed two 3-year-old boy’s internal organs and masseter muscle microvascular system. Under the scanning electron microscope observation, we can see the branches of arteries are divided into three types; 1. Tree-branch-like side branches; 2. Symmetry branches; 3. Thin plexiform branches. This article describes the differences in endothelial cell indentations on arterial and venous cast surfaces; the morphological features of the anterior capillary sphincter indentation; the second-level anastomosis of the arched artery and its physiological significance. The diameter of the capillary mold is 5.6 ± 1.9 μm. 2 to 3 venous turbu capillaries converge into capillary venules. Visible an independent capillary directly into the vein. The above morphological factors have important physiological significance in the microcirculation of skeletal muscle.