Red blood cells are thus much more common than the other blood particles: there are about 4,000â11,000 white blood cells and about 150,000â400,000 platelets in each microliter of human blood. Human red blood cells take on average 20 seconds to complete one cycle of circulation.
Â­Â­Your kidneys receive the blood from the renal artery, process it, return the processed blood to the body through the renal vein andÂ­ remove the wastes and other unwanted substances in the urine. Urine flows from the kidneys through the ureters to the bladder. In the bladder, the urine is stored until it is excreted from the body through the urethra. Now let's take a look inside your kidneys.
The Urinary System. Many of your body parts work with each other to form the Urinary System. Urine is taken out of the body if these parts work with each other in the right order. This allows normal urination to happen. For both men and women, the main parts of the system are Kidneys, Ureters, Bladder and Urethra. Urine is produced in the kidneys. It flows through tubes called ureters, and into the bladder. Urine leaves the body through the urethra.