B.Nephrons1.RenalCorpusclesis spherical in shapemeasuresabout200umindiameterhastwopoles:avascularpole>aurinary polerenal tubule
11 u is spherical in shape u measures about 200μm in diameter u has two poles: a vascular pole a urinary pole 1. Renal Corpuscles B. Nephrons renal tubule
B.Nephrons1.RenalCorpusclesconsists oftwo structures:①glomerulusis a tuft of anastomosingcapillariesglomerular capsule2is adouble-walledepithelialcapsule
12 1. Renal Corpuscles u consists of two structures: glomerulus is a tuft of anastomosing capillaries glomerular capsule is a double-walled epithelial capsule B. Nephrons
① glomerulusa.Capillary networkis derived fromthe afferentarterioleIs drainedbythe efferentarterioleconsists of atuftoffenestratedcapillarieswhichlackthethindiaphragmontheirfenestraefenestrae
13 glomerulus a. Capillary network u is derived from the afferent arteriole u Is drained by the efferent arteriole u consists of a tuft of fenestrated capillaries which lack the thin diaphragm on their fenestrae fenestrae
1-324Photomicrographof the cortical labyrinth3 afferent arteriole 4 efferent arteriole 5 fenestrated capillaries14
14 Photomicrograph of the cortical labyrinth 5
glomeruluscapillaryb.mesangialcellsliebetweentheglomerularcapillariesare small groups of stellate cells(whichare contractileand capable ofphagocytosis)capillarymesangial cell
15 glomerulus b. mesangial cells u lie between the glomerular capillaries u are small groups of stellate cells (which are contractile and capable of phagocytosis) capillary mesangial cell capillary