Which system is responsible for purifying the body in waste manner?

The excretory system is responsible for purifying the body by removing waste products. This system includes the kidneys, ureters, bladder, and urethra, all of which play vital roles in filtering blood, forming urine, and expelling waste materials from the body. As waste products are generated through metabolic processes, the kidneys filter the blood to eliminate toxins and excess substances, which are then transported via the ureters to the bladder for storage before being excreted.

While the respiratory system does assist in removing carbon dioxide from the body, and the circulatory system is crucial for transporting nutrients and waste products, neither of these systems primarily focuses on the elimination of waste. The digestive system primarily breaks down food and absorbs nutrients rather than dealing directly with waste purification. Hence, the excretory system stands out as the primary system tasked with this critical function of waste removal and purifying the body.