The urinary system or tract on figure 17 includes the four main structures. These are kidney, ureters, bladder and urethra. The ureters are tubes that interface the kidneys to the bladder and the urethra is a tube through which urine exits the body. The urinary system has a several essential capacities. It disposes of the waste products that are made when food is changed into vitality. It also keeps up the correct balance of water and electrolytes (salts) inside the body’s cells. Another key capacity is the generation of hormones called erythropoietin and renin, which are essential in keeping healthy blood pressure, delivering platelets, and engrossing salt effectively. At long last, the urinary framework forms also vitamin D. This vitamin D is indispensable in directing the calcium and phosphorous adjust for a feline’s body. It also promotes the maintenance of calcium, thus helping bone development and nerve, muscle control. At the point when ingested in extravagant levels. However this fat-dissolvable vitamin can cause serious medical problems.