安南龟肝脏和肾脏的组织学观察

采用常规石蜡切片对安南龟的肝脏和肾脏进行了组织学观察。研究结果发现,肝脏分为3叶,肝实质内结缔组织少。肝脏由无数肝小叶构成,肝小叶分界不清。肝细胞为多角形的腺上皮细胞,细胞核圆球形,位于中央。胆小管沿着肝细胞索向肝小叶四周放射并连成细长的微细管道。肾脏由肾小体、颈段、近曲小管、中间段、远曲小管和收集管6部分构成,肾小体由肾小球和肾小囊组成,在肾小体附近可见致密斑样结构,未见髓袢结构。肾小球由盘曲的毛细血管构成。肾小囊是肾小管的起始端,由内、外两层壁层构成,内层与肾小球的毛细血管紧贴,外层为单层扁平上皮细胞。

Histological observation on the liver and kidney of Annamemys annamensis

Histological observation on the liver and kidney of Annamemys annamensis was made by paraffin section and microphotograph technique. The results show that the liver is separated into three leaves. The connective tissue is little and the borderline of hepatic lobule is mistiness in liver. The liver is composed of countless hepatic lobules and the borderline of hepatic lobules is mistiness. The liver cells are polygonal gland epithelia. The nucleus of cell are round and lay in the center. The bile ductules radiate along the hepatic cords and are connected to acerose microtubule. The kidney is composed of renal corpuscle. neck segment, proximal tubule, middle segment, distal tubule and collecting tubule. The renal corpuscle is composed of glomerulus and renal capsule. Structure of maculae densa is observed around renal corpuscle, but no medullary loop is discovered. The glomerulus is composed of coiling capillaries. The renal tubule starts and ends from renal capsule and is made up of inside and outside walls. The inside wall sticks to the capillaries of glomerulus and the outside wall is composed of simple squamous epithelia.