What is meant by excretion in the context of body processes?

Excretion in the context of body processes specifically refers to the elimination of metabolic wastes from the body. This process is crucial because it ensures that harmful byproducts of metabolism, such as urea and carbon dioxide, do not accumulate in the body and disrupt normal physiological functions. The body's excretory systems, including the kidneys, lungs, and skin, work together to filter out these wastes and expel them from the body, thereby maintaining homeostasis and overall health. Understanding excretion is important for recognizing how the body manages waste products and regulates its internal environment.