Kaplan Nursing Entrance Practice Exam

Which organ is responsible for urine production?

1. Bladder

2. Liver

3. Kidney

4. Pancreas

The correct answer is: Kidney

The kidney is the organ responsible for urine production. It plays a crucial role in the body's filtration system, where it filters blood to remove waste products and excess substances, forming urine in the process. The kidneys perform this function through a complex network of nephrons, which are the functional units that filter blood, reabsorb necessary substances, and excrete waste in the form of urine. The produced urine is then transported to the bladder for storage until it is excreted from the body. In contrast, the bladder is responsible for storing urine until it is ready to be expelled. The liver plays a vital role in metabolism and detoxification, processing various substances in the body but does not produce urine. The pancreas produces enzymes for digestion and hormones like insulin, but it is not involved in urine formation. Therefore, the role of the kidney as the organ of urine production is essential for maintaining the body's fluid and electrolyte balance, as well as eliminating waste.