1. Small Intestine
  2. Liver
  3. Stomach
  4. Large Intestine
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1 Answers

Option 1 : Small Intestine

The correct answer is Small Intestine.

  • The small intestine is the part of the human digestive system is the digestion of food completed.
  • It is an organ in the gastrointestinal tract where most nutrient and mineral absorption from food ends up.
  • It lies between the stomach and the large intestine and absorbs bile and pancreatic juice to help in digestion through the pancreatic duct.
  • There are three distinct regions of the small intestine-duodenum, jejunum, and ileum.
  • The large intestine is the last part of the gastrointestinal tract and of the vertebrate digestive system.
  • In humans, in the right iliac region of the pelvis, the large intestine begins, just at or below the waist.

Human digestive system-

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The digestive system includes 5 steps, They are in order as follows::

1) Ingestion

2) Digestion

3) Absorption

4) Assimilation

5) Egestion

  • Ingestion: It is the process of taking food into the body by the animal.
  • Digestion: It is the process in which food containing larger molecules is converted or break down into small water-soluble molecules.
  • Absorption: It is the process in which digested food goes into the bloodstream.
  • Assimilation: It is the process in which absorbed food is taken up by the body cells for their growth and energy.
  • Egestion: It is the process in which undigested is discharged as faeces.
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