Which organ in the human body is primarily responsible for purifying blood by filtering out nitrogenous wastes?

💡 Solution & Explanation

The kidneys are the primary excretory organs in humans responsible for filtering urea, excess water, and mineral ions from the blood to produce urine. The liver processes toxins and produces urea, but filtration occurs in nephrons within the kidneys. Lungs remove carbon dioxide, and the heart pumps blood through the circulatory system.