Renal corpuscle and juxtaglomerular apparatus Juxtaglomerular AA MD apparatus N MC Bowman's M GBM US U AA Afferent arteriole PE Parietal epithelium MD Macula densa Po Podocyte EA Efferent arteriole E Endothelium N Sympathetic nerve terminals F Foot process Gc Granular cells GBM Glomerular b embrane SMC Vascular smooth muscle cells Us Urinary space Adapted with permiss on tom Kriz w, Kaisshng B: Structural organ zaton of the mammalian kidney, In Seldin D