Definitions
1. Ingestion- The process of taking in food into the body is called ingestion.
2. Digestion- The process in which complex substance of food are broken down into simpler substances it is called digestion.
3. Absorption- The process in which digested food passes into the blood vessels in the walls of small intestine is called absortion.
4. Assimilation- The process by which absorbed substance are transported blood vessels to be utilized is called assimilation.
5. Egestion- The undigested and unabsorbed food residues expelled out of the body through anus is called egestion.
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