Final answer:
The excretory system eliminates nitrogenous wastes and regulates water, electrolyte, and acid-base balance of the blood through the kidneys, ureters, urinary bladder, and urethra.
Step-by-step explanation:
The excretory system is responsible for eliminating nitrogenous wastes and regulating water, electrolyte, and acid-base balance of the blood. This system consists of the kidneys, ureters, urinary bladder, and urethra. The kidneys filter waste products and excess water from the blood to produce urine, while the ureters carry urine from the kidneys to the urinary bladder. The bladder stores urine until it is excreted from the body through the urethra.