The organ that removes metabolic wastes including urea, excess water, and salts from the blood.

• lung

• liver

• kidney

• colon

Which of the following parts is not found in the urinary system?

• Ureters
• Urethra
• Bladder
• Rectum 

Which number is the urinary bladder?

• 1

• 2

• 3

Which number is the ureter?

• 1

• 2

• 3

Which number is the kidney?

• 1

• 2

• 3

Which structure is responsible for filtering blood?

• 1

• 2

• 3

Which structure is responsible for storing urine?

• 1

• 2

• 3

Which structure is responsible for transporting urine?

• 1

• 2

• 3

Which structure is the medulla?

• 1

• 2

• 3

• 4

• None of these

Which structure is the renal artery?

• 1

• 2

• 3

• 4

• None of these