Which system removes waste from the body via urine?

• A. Digestive System
• B. Urinary System
• C. Nervous System
• D. Endocrine System

Answer: (B)

Waste removal via urine is carried out by the urinary system. The kidneys filter blood to remove metabolic wastes and excess water and ions, forming urine. This urine travels through the ureters to the bladder and is excreted through the urethra. The urinary system also helps maintain body fluid balance, electrolyte levels, and acid-base balance. Other systems have different primary roles: the digestive system eliminates solid waste from digestion, the nervous system coordinates body activities, and the endocrine system regulates hormones. The urinary system is the one dedicated to eliminating waste specifically through urine.