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Question

Where is the process of digestion in humans completed?


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Solution

Digestion:

  1. Digestion is a chemical process.
  2. It converts complex food substances into simple forms.
  3. The digested food can be absorbed by the small intestine.
  4. The digestion is completed within 4 to 5 hours.

Small intestine:

  1. It is the longest organ of the digestive system.
  2. It is a highly coiled tube.
  3. Here absorption of all digested food occurs.
  4. The presence of villi helps in absorption.

Digestion in humans:

  1. Ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and faeces are the six functions of digestion.
  2. The digestion starts in the mouth and continues to the stomach.
  3. From mouth to stomach partial digestion of food occurs.
  4. Complete digestion and absorption occur in the small intestine.
  5. The epithelial cells that make up the mucosa of the small intestine absorb the majority of nutrients.
  6. Then all the nutrients are mixed into the bloodstream.
  7. Thus the process of digestion is completed in the small intestine.


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