URINARY SYSTEM
parts of the urinary system
Kidneys
which is a pair of organs that are located below the ribs toward the middle of the back.
Their function is to remove the liquid waste from the blood in the form of urine keeping a stable balance of cells and other substances in the blood
Renal vein
Ureters
Muscles are continually tighten and relax forcing urine downward, away from the kidneys. If urine backs up a kidney infection can develop.
Bladder
The bladder's walls relax and expand to store urine, and contract and flatten to empty urine through the urethra.
Pelvis
Urethra
It is a tube that allows urine to pass outside the body.
Functions
It filters the waste products and excess water from te blood and excrete them from the body .
If the kidneys didn't remove the waste, they would build up in the blood and damage the body .