舌肌和翼内肌微血管几何学构筑的研究

本文应用微血管腐蚀铸型扫描电镜,观察了2例3岁幼儿的舌肌和翼内肌的微血管构型。在扫描电镜下,舌肌内的毛细血管网构型分三类:1.花蕊样毛细血管袢;2.云朵样毛细血管网;3.多角形套状毛细血管网。毛细血管铸型的直径为5.3±1.5μm,描述了动脉铸型表面上的内皮细胞核压痕和前毛细血管括约肌压痕的形态特征。讨论了血管袢的结构形态及其机能意义,为理解骨骼肌的微循环的过程提供了形态学基础。

A TRIDIMENSIONAL STUDY OF MICROVASCULATURE IN THE TONGUE AND MEDIAL PTERYGOID MUSCLES BY SEM

The author used a microcorrosion cast/scanning electron microscope (SEM) technique to study the microvascular bed of the muscles of tongue and medial pterygoid in two normal babies. Under SEM, the arteriole cast showed on their surfaces the typical imprint of the endothelial lining, shincter were common at the orifice of the precapillary arterioles and original capillaries. Capillary casts showed astonishing differences between the capillary networks in the muscles of tongue and medial pterygoid.Most of their characteristics were found to be consistent throughout the microvasculature. These structural features were considered to be factors in the active regulation of blood flow through the skeletal muscle microvasculature.