Final answer:
Waste products from digestion and metabolism are not destroyed; instead, they are excreted from the body through the large intestine, liver, skin, and lungs, each playing an essential role in waste removal.
Step-by-step explanation:
During digestion and metabolism, waste is not destroyed but is a byproduct of these processes. Substances in food that cannot be broken down into nutrients and absorbed as part of the digestive process pass out of the body as solid waste, in what is known as elimination. The large intestine plays a vital role by removing solid wastes after the digestion of food. Excess waste in blood is transferred to the excretory organs, such as the liver which breaks down toxins and excess amino acids. The skin and lungs are also essential in excretion, by eliminating excess water, salts, carbon dioxide, and other waste products through sweat and exhalation.
In summary, waste is managed and excreted by various systems in the body. It moves from the internal systems like the intestines to be expelled, or through the bloodstream to organs specialized in waste removal, demonstrating that waste management is a critical component of overall body function.