digestion in human? briefly explain.
Ingestion – It is the process of taking food, drink, or another substance into the body by swallowing or absorbing it.
Digestion – It is the process of breaking down complex food substance into simple molecules.
Assimilation – It is the process in which the absorbed food is taken in by the body cells and used for energy, growth and repair.
Excretion/Egestion – It is the process in which the undigested food is removed from the body.