the urinary system is also known as the renal system at a consists of the kidneys the ureters the bladder and the urethra your kidneys are being shaped organs that are about the same size to compute the mouse to find your kidneys put your hands on your lower back and slide them up until you feel your room your kidneys are just behind a layer of muscle there or your blood flows through your kidneys 400 times a day in order to filter out the waste however they also have other roles as explained in the video what is homeostasis keeping your body balanced is very important on the urinary system plays an important role in this it keeps the water levels ions such as potassium sodium calcium magnesium and phosphate pH and blood pressure as close to constant as possible the blood goes into the kidneys via the renal artery it is then forced into a million small filtering units called nephrons waste is then removed and close down the reaches to the urinary bladder the clean blood then leads the kidneys via the renal vein and can return to the body the liquid that connects in the bladder is called the urine it contains urea which is a waste product from the breakdown of the excess protein it also contains excess water that the body doesn't need along for some ions like sodium and potassium did you know yo gladder can hold up to 800 milliliters of urine there are two little stinkers that control when to release your urine from the batter the first one opens up automatically when the batter starts to get full luckily we have voluntary control over the second one so we can hold on that extra bit longer if we need sometimes your kidneys can fail a long-term complication associated with diabetes and blood pressure is kidney failure this is obviously not good as waste pulled up in the blood very quickly if this happens we will need to go to hospital regularly and go on a dialysis machine dialysis does the same job as your kidneys filtering the waste out of the blood and balancing and ions hopefully at some stage you will be able to have a kidney transplant the best thing about kidneys is that you actually only need one to function so a healthy person can donate one of these views and you can both function normally magic to learn more about how Kiwis remove Europe from the body watch the following video