A diagram shows a food bolus moving down the oesophagus towards the stomach as the tube constricts behind it. Which process is occurring, and how?

Question

A diagram shows a food bolus moving down the oesophagus towards the stomach as the tube constricts behind it. Which process is occurring, and how? — Exam MCQ

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B. Peristalsis through rhythmic contraction and relaxation of muscular walls — Peristaltic waves of muscle contraction and relaxation propel the bolus through the oesophagus. The source diagram is described in the question text.

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A. Digestion through rhythmic contraction and relaxation of muscular walls

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C. Digestion through enzymes

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D. Peristalsis through enzymes

A diagram shows a food bolus moving down the oesophagus towards the stomach as the tube constricts behind it. Which process is occurring, and how?

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