Q:

Which part of the gastro-intestinal tract contains three distinct layers of smooth muscle in its walls

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Which part of the gastro-intestinal tract contains three distinct layers of smooth muscle in its walls?


  1. rectum
  2. small intestine
  3. stomach
  4. oesophagus

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C: The stomach uses its muscular wall to churn (mix) the contents as part of mechanical digestion.

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