Digestive system

Digestion is really a sequence of five linked events: ingestion (taking food in), digestion proper (breaking macromolecules down into micromolecules), absorption (moving those micromolecules into the bloodstream), assimilation (the absorbed substances becoming part of the body's own cells), and egestion (eliminating what remains undigested). Carrying out this sequence is the job of the digestive system, which is mad …