1. Urinary System: This system is responsible for filtering waste products from the blood and producing urine. The kidneys are the primary organs of the urinary system, and they filter waste products like urea, creatinine, and excess salts. The urine then travels through the ureters to the bladder, where it is stored until it is excreted through the urethra.
2. Integumentary System: This system, which includes the skin, hair, and nails, also plays a role in excretion. The skin releases sweat, which contains water, salts, and a small amount of urea. This helps regulate body temperature and eliminate some waste products.
While the urinary system is the primary system for waste excretion, other systems like the respiratory system (exhaling CO2), digestive system (eliminating undigested food), and even the liver (breaking down toxins) contribute to the overall process of waste removal from the body.
