Structural and functional unit of kidney of human is nephron or uriniferous tubules ie, each kidney is composed of various nephrons. Nephron = Malpighian body + tubule Malpighian body = Glomerulus + Bowmans capsule Glomerulus is network of arteriole and capillaries. Bowmans capsule is a cup like structure lined by squamous epithelium. Tubule consist of proximal convoluted tubule, loop of Henle and distal convoluted tubule.