【摘要】 本文对6只犬的左、右肾进行了扫描电镜观察。结果表明:肾小球的外部构筑可分为球型、菊花型和混合型。在有的肾小球的入球小动脉和出球小动脉之间,或邻近的两出球小动脉之间,有长短不一、粗细不等的血管吻合支存在。在肾小球的血管极处,即肾小球旁器所在部位,非血管成分被腐蚀,但清楚地显示出肾小球旁器内毛细血管网的立体构型,表现为管径粗、网孔小、网眼密,血管分布近似三角形。这种构型特点,与该部位血流速率快、流量大有密切关系。更多还原

【Abstract】 The kidneys removed from six female adult dogs were injected through the renal artery with ABS at a constant pressure between 33.3—33.7 kPa(250—280mmHg). Small specimens cut out from the kindneys were digested in 3％ trypsin solution for 48 hours and then eroded in 50％ HCl. The cast specimens were studied under the scanning electron microscope. The results were outlined as follows: 1. The corrosion-cast models of the renal glomerulus of the dogs observed under the SEM could be divided into three kinds: the spherical glomerulus, the chrysanthemum-like glomerulus and mixed glomerulus. 2. In general, the afferent and efferent arteriolae entered or exited at the hilum of glomerulus. Rarely, the efferent vessel left the glomerulus at the opposite side of the hilum. Anastomoses between the afferent and efferent or between the efferents vessels were found in our casts. 3. The capillary network of the juxtaglomerular apparatus was observed at the hilum of glomerulus in our casts. The diameters of the meshes of the capillary network were smaller than that of the vessels themselves.更多还原