Choose the correct answer:

Which of the following is not a part of the excretory system of humans?

Explanation:

Organs of the human excretory system include:

i. Kidneys: The kidneys are bean-shaped structures that are located on either side of the backbone and are protected by the ribs and back muscles.

ii. Ureters: 

A pair of ureters is thin muscular tubes that exit each kidney. 

These transport urine from the kidney to the urinary bladder.

iii. Urinary bladder: 

The urinary bladder is a muscular sac-like structure that stores urine. 

The process of micturition, or the act of urinating, empties the urinary bladder.

iv. Urethra: 

This tube arises from the urinary bladder and aids in the expulsion of urine from the body. 

It forms the common route for sperms and urine in males.