👉 Excretion is a biological process in which waste products, including urine and feces, are eliminated from the body. This process occurs through various organs and structures within the human body, such as kidneys, bladder, ureters, and intestines. The primary function of excretion is to remove waste products from the body, which includes water, minerals, electrolytes, and large molecules such as proteins and fats. Excretory systems, including the kidneys, have a delicate balance between filtering out harmful