A Level Biology Practice Exam

In which part of the urinary system is urine stored before elimination?

1. Kidney

2. Urethra

3. Ureter

4. Bladder

The correct answer is: Bladder

Urine is stored in the bladder before it is eliminated from the body. The bladder is a muscular sac that can expand to hold varying amounts of urine, allowing for the temporary storage of urine until the body is ready to excrete it through the urethra during urination. Its structure is designed to accommodate the fluctuating volumes of urine produced by the kidneys throughout the day. In contrast, the kidneys produce urine, the ureters are tubes that transport urine from the kidneys to the bladder, and the urethra is the duct through which urine is expelled from the body. Therefore, the bladder plays a crucial role as the storage container in the urinary system, making it the correct answer to the question.