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.
This type of catheter is used if you aren't able to use a catheter that is inserted into the urethra. The urethra carries urine from the bladder out of the body. Your doctor inserts the catheter into the bladder through a cut (incision) in your lower belly, just above the pubic bone. You can shower with your catheter and urine collection bag in place unless you have been told not to. 2  Clean the bag every day after removing it from the catheter. 3  Use another container while you clean the bag. 4  To clean the bag, fill it with 2 parts vinegar to 3 parts water and let it stand for 20 minutes.