Digestion:- the process that is used in order to create decomposition and remove vital components with the use of heat, enzymes, or a solvent.
Absorption:- this occurs after the digested food molecules are engrossed into the small intestine. By doing this they will pass through the barrier of the small intestine and into our blood. Once having entered our bloodstream, the molecules are passed through out the body to where ever they are needed.
Secretion:- A process by which substances are produced and discharged from a cell, gland, or organ for a particular function in the organism or for excretion.
Excretion:- this process