Answer:
Kidneys, bladder, ureters, and urethra.
Explanation:
The main urinary system organs and other urinary system structures are the kidneys, bladder, ureters, and urethra. These form a sterile environment which is protected against the non-sterile outside world, provide the forces necessary to expel urine through a series of organs, and respond to sensitive involuntary and voluntary nervous stimulation.
