Biology for IGCSE & O level - Human Nutrition (Section 6 - No. 12)
Peristalsis is best described as:
The mechanical breakdown of food.
The absorption of nutrients in the small intestine.
Waves of muscular contractions that move food along the digestive tract.
The mixing of food with gastric juices in the stomach.
Explanation
Peristalsis involves coordinated muscle contractions that propel food through the digestive system.
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