urine is temporarily stored in the
The kidneys perform the excretory functions of this system. These organs produce urine, a fluid waste product containing water, ions, and small soluble compounds. Urine leaving the kidneys travels along the urinary tract, which consists of the paired ureters and the urinary bladder, where urine is temporarily stored. When urination, or micturition, occurs, contraction of the muscular urinary bladder forces urine through the.