Final answer:
The urinary bladder is the organ that temporarily stores urine before it is excreted through the urethra.
Step-by-step explanation:
The temporary storage of urine takes place in the urinary bladder. Blood is filtered in the kidneys, and the resulting filtrate is continuously turned into urine. The urine is then transported through ureters to the bladder, a hollow, muscular, and stretchy organ that collects and holds urine until it is convenient for excretion. During urination, the internal urethral sphincter relaxes, allowing urine to flow from the bladder into the urethra, the tube that carries urine out of the body.