实验九肾单位

实验九肾单位 实验九 肾单位 主题:肾单位 主题属性:定选 标本号:29# 材料:兔肾切片 染色:HE染色 教学要求:掌握肾的结构特点，特别是肾单位各部分的结构特点 肾小囊renal capsule 肾小球Glomerular 近端小管Proximal tubule 致密斑Tight spot 远端小管Distal tubule 图九 兔肾单位切片 (40×10，HE染色)The rabbit nephron sections (40 × 10, HE staining) 肾单位由肾小球、肾小囊、近端小管、细段、远端小管构成。 肾小球:为肾小囊内一团蟠曲的毛细血管，其中除内皮细胞核肾小囊脏层足细胞外，还有血管系膜细胞。 肾小囊:分脏层和壁层，脏层细胞为足细胞，紧贴在毛细血管外面;壁层为单层扁平上皮，其间的间隙即肾小囊腔。 近端小管起始部连接肾小囊，末部连接细段，细段再连接远端小管， 远端小管接皮质集合管。Nephron glomerular, by renal proximal tubule thin segment,,, the distal tubule. Glomerular: for the renal capsule in a coiled capillary endothelial cells, which in addition to the dirty layer of renal podocytes, and mesangial cell. Renal capsule: visceral and parietal cells, dirty layer for podocyte, clinging to the outside wall of capillaries; layer of simple squamous epithelium, the gap that the renal cavity. Proximal tubular initial connection renal capsule, end connected with the thin section, thin section connecting the distal tubule, the distal tubule after cortical collecting duct.