What are the 4 functions of excretory system?

1. Regulating fluid balance. The excretory system helps regulate fluid balance by controlling the amount of water in the body. The kidneys filter water from the blood and send it to the bladder, which stores it until it is eliminated as urine.

2. Regulating electrolyte balance. The excretory system also helps regulate electrolyte balance by controlling the amount of salts and minerals in the blood. The kidneys filter these substances from the blood and adjust the levels as needed.

3. Removing waste products. The excretory system removes waste products from the body, including urea, creatinine, and other metabolic byproducts. These waste products can build up in the body and cause health problems if they are not removed.

4. Maintaining the pH balance of the blood. The excretory system also helps maintain the pH balance of the blood by controlling the amount of hydrogen ions in the body. The kidneys can secrete or reabsorb hydrogen ions as needed to keep the blood pH level within a narrow range.