The removal of remnant particles of digestion from the body is called

The removal of remnant particles of digestion from the body is called egestion. Egestion is the process of eliminating undigested food or fecal matter from the body through the anus. Assimilation is the process by which nutrients from digested food are absorbed into the body's cells and used for energy, growth, and repair. Elimination is a broader term that refers to the removal of waste products from the body, which can include both solid waste (egestion) and other forms of waste such as urine or sweat. Excretion specifically refers to the process of eliminating metabolic waste products from the body, such as urea or carbon dioxide, through the kidneys, lungs, or other organs.