part of contributes to morphology of immediate transformation of organ part nephron The basic functional unit of the kidney. its chief function is to regulate the concentration of water and soluble substances like sodium salts by filtering the blood, reabsorbing what is needed and excreting the rest as urine. A nephron eliminates wastes from the body, regulates blood volume and blood pressure, controls levels of electrolytes and metabolites, and regulates blood pH. Its functions are vital to life and are regulated by the endocrine system by hormones such as antidiuretic hormone, aldosterone, and parathyroid hormone.[WP]. tubulus renalis MA:0000375 ZFA:0005282 TAO:0002153 EMAPA:28491 EV:0100384 nephroneum SCTID:361337001 EMAPA:35592 Wikipedia:Nephron mature nephron NCIT:C13048 CALOHA:TS-1312 GAID:428 FMA:17640 BTO:0000924 MESH:D009399 kidney uriniferous tubule primitive nephron