Biology for IGCSE & O level - Human Nutrition (Section 3 - No. 1)
What is the function of the muscular contractions in the oesophagus?
To mix food with digestive enzymes.
To absorb nutrients from the food.
To move food towards the stomach.
To increase the surface area of the food.
Explanation
The muscular contractions, or peristalsis, move the food bolus down the oesophagus towards the stomach.
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