Final answer:
The kidneys are the organ primarily responsible for the elimination of water and waste products from the body. They act as the main osmoregulatory organs, filtering blood and excreting waste through the production of urine.
Step-by-step explanation:
Which Organ is Primarily Responsible for the Elimination of Water & Waste Products?
The organ primarily responsible for the elimination of water and waste products is the kidneys. These bean-shaped structures are part of the urinary system and play the crucial role of filtering blood, removing excess water, electrolytes, and waste products to produce urine. While other organs such as the skin, liver, lungs, and large intestine also play roles in excretion, the kidneys are the main osmoregulatory organs, using up to 25 percent of the oxygen we breathe to efficiently carry out this function.
The skin helps excrete excess salts and a small amount of urea through sweat. The liver processes toxins and produces bile, which carries waste like bilirubin to the intestines. The lungs are responsible for expelling carbon dioxide and water vapor. Nonetheless, when it comes to specifically eliminating excess water and waste via urine, the kidneys take the lead.