b'Urinary SystemChapter hapterThis system flushes waste products from the body via the kidneys, bladder and urinary tract.The urinary system controls the discharge of waste materials filtered from the blood.The filtration process occurs in the kidneys.The kidneys are paired organs located behind the peritoneum (smooth layer of tissue that linesthe abdominal cavity), on either side of the spine just below the diaphragm.The kidneys filter and clear the blood of potentially harmful waste materials and also controlthe concentrations of chemical elements (potassium and sodium).If the kidneys are damaged by trauma or disease, an imbalance of fluid chemicals occurs. Death could result within days unless an artificial means of blood filtration (dialysis) is commenced.Water Levels About 75% of the human body is made up of water. Your kidneys control the water levels, filter it and remove waste. nside each kidney are tiny structures called Inephrons. These filter blood and make urine.Cleaning the BloodThe renal artery transports blood into the kidneys. It is here where excess liquid and impurities are filtered and removed then made into urine. Clean blood departs via the renal vein and urine drains into the bladder for excretion.What is a stomach upset?If you eat or drink something that contains harmful bacteria, your body tries to expel it quickly. Your muscles tend to relax allowing food to come back up or you may have to quickly divert to the bathroom as the food quickly rushes through your system.How Your Body Works 31How Your Body Works31'