Here's how it works:
* Kidneys: Filter waste products from the blood, producing urine.
* Urinary bladder: Stores urine until it is eliminated.
* Ureters: Transport urine from the kidneys to the bladder.
* Urethra: Conducts urine from the bladder to the outside of the body.
While the excretory system is the primary system for eliminating metabolic waste, other systems also play a role:
* Respiratory system: Exhales carbon dioxide, a waste product of cellular respiration.
* Skin: Sweating removes excess salt and water.
* Digestive system: Eliminates undigested food and waste through feces.
So, it's not just one system, but a coordinated effort by several systems to remove metabolic waste from the body.
