The nephron is the functional unit of the kidney. It is comprised of five different parts that all work together to help the kidney function properly. The main function of the kidney is to filter and clean the blood.
The nephron is broken into the glomerulus, the proximal convoluted tubule, the loop of Henle, the distal convoluted tubule and the collecting ducts. The glomerulus initially filters blood that enters the nephron and sends the filtered blood to the proximal convoluted tubule. Here, the majority of the nutrients and the electrolytes from the filtered blood are absorbed. The loop of Henle takes the filtrate and concentrates it to appear more like urine. Next, the filtrate moves into the distal convoluted tubule, which may reabsorb any water or sodium that the body needs. The collecting ducts then collect the remaining filtrate, and it is excreted from the body as urine.