Which of the following is a function of the excretory system?

• A. Elimination of nitrogenous wastes
• B. Maintenance of salt balance
• C. Production of urine
• D. Maintenance of the water balance
• E. All of the listed responses are correct.

Answer: (E)

Verified step by step guidance

1. Understand the role of the excretory system: The excretory system is responsible for removing waste products from the body, maintaining homeostasis, and regulating the composition of body fluids.
2. Identify the types of waste managed by the excretory system: Nitrogenous wastes, such as urea and ammonia, are byproducts of protein metabolism and are eliminated by the excretory system.
3. Consider the role of the kidneys: The kidneys are key organs in the excretory system that filter blood, remove waste, and produce urine. They also play a crucial role in maintaining salt and water balance.
4. Examine the process of urine production: Urine is produced through filtration, reabsorption, and secretion processes in the kidneys, which help in eliminating waste and regulating fluid balance.
5. Evaluate the maintenance of salt and water balance: The excretory system, particularly the kidneys, adjusts the concentration of salts and water in the body to maintain homeostasis, ensuring that all listed functions are interconnected and correct.