Ingestion: The process of taking in the food is called ingestion.
Digestion: The process of breaking complex food substances into simple molecules is called digestion. Simple molecules; thus obtained; can be absorbed by the body.
Absorption: The process of absorption of digested food is called absorption.
Assimilation: The process of utilization of digested food; for energy and for growth and repair is called assimilation.
Egestion: The process of removing undigested food from the body is called egestion.
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