name the steps in animal digestion and define them.
Asked by Jyotsna Punshi | 28th May, 2013, 03:49: PM
There are four (4) stages of food processing:· Ingestion (eating): taking in nutrients (important part in food)· Digestion: using physical and chemical means to break down complex organic molecules into smaller usable parts· Absorption: pulling in digested molecules into the cells of the digestive tract, then into the blood· Egestion: the removal of waste food materials (e.g. cellulose = fibre)from the bodyThese four steps are done by the digestive system.
Answered by | 28th May, 2013, 03:57: PM
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