Question

The diagram shows the outline of the human excretory system.

Identify X and it's function.

• A. Urethra; To excrete urea
• B. Nephron; To produce urea
• C. Ureters; To produce urine
• D. Urinary bladder; To store urine

Answer 1

The correct option is D

Urinary bladder; To store urine

The 'X' labelled in the diagram is known as the urinary bladder. It is an important part of the human excretory system. It stores urine, which allows urination to be infrequent and controlled.