Final answer:
The main function of the excretory (urinary) system is to get rid of waste and extra fluid.
Step-by-step explanation:
The main function of the excretory (urinary) system is to get rid of waste and extra fluid. It plays a crucial role in maintaining homeostasis by eliminating metabolic waste products such as urea, salts, and excess water from the body. The kidneys, which are the primary organs of the excretory system, filter blood and produce urine, which is then excreted through the urinary tract.
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