Fact 1: Urine is the liquid waste product of the body that is excreted by the urinary system.

Fact 2: Liquid waste is put into the bladder.

Given the two facts above, answer the question "Urine is a product of what organ of the body that is excreted by the urinary system?" with the following options: 
- bowel
 - epidermal
 - bladder
 - alveoli
 - lungs
 - urine
 - mammals
 - NaCl


 

   bladder      