Urinary System is a system that produce, stores and alimented urine. Urinary system has bladder, two kidney, two ureters and Urethra.The kidney filter waste products out of the bloodstream and dispose of them by creating urine. Urine is made of waster products dissolve in water. Two ureters are thin long tubes carries urine from the kidney and to the bladder. Bladder collects urine by exerted by the kidney. Urethra is a single tube that allows urine to exit the body from the bladder.
This relates to biology. The Kidney needs to balance out. These are the four things in the Urinary System.
How does the Urinary System stores food or water? Do you need two Kidney or no? Why are ureters are thin and long tubes?
en.wikipedia.org/wiki/Urinary_system, library.thinkquest.org/5777/urin1.htm
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