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Human Physiology

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Multiple Choice

Which among the following statements regarding the human digestion process is INCORRECT?

  1. Digestion begins from the mouth of an organism.
  2. Gastric acid is about 0.5% hydrochloric acid.
  3. The gastric phase is stimulated by distension of the stomach.
  4. The gastric phase occurs at the sight, thought and smell of food.
  5. The human gastrointestinal tract is around 9 m long.
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