draw a labelled diagram of the digestive system. explain the process that take place in each part of digestive system
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There are four steps in the digestion process: ingestion, the mechanical and chemical breakdown of food, nutrient absorption, and elimination of indigestible food. The mechanical breakdown of food occurs via muscular contractions called peristalsis and segmentation.
food is digested in the mouth, stomach and small intestine. digested food is absorbed into the bloodstream in the small intestine. excess water is absorbed back into the body in the large intestine. any undigested food passes out of the anus as faeces when we go to the toilet.
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The digestive system ingest and digest food, absorbs released nutrients and excretes food components that are indigestible. The six activities involved in this process are- ingestion, motility, mechanical digestion, chemical digestion, absorption and defecation
