The document outlines the structures and cells of the kidney including: - The renal corpuscle which includes the glomerulus and Bowman's capsule. - The glomerulus contains the afferent and efferent arterioles. - Juxtaglomerular (JG) cells are located near the afferular arteriole and mesangial (MD) cells are located in the glomerulus. Together they form the JG apparatus. - The thick ascending limb of the loop of Henle contains simple cuboidal cells and passes into the macula densa region.