1. Kidney
   The kidneys are bean-shaped excretory organs in vertebrates.
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2. Ureter
   In human anatomy, the ureters are the ducts that carry urine from the kidneys to the urinary bladder
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3. Urethral sphincter
   In mammals the flow of urine from the urinary bladder is controlled by a group of muscles collectively called the urethral sphincter
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4. Urinary bladder
   In the anatomy of mammals, the urinary bladder is the organ that collects urine
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5. Urinary system
   Urinary system
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