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# By which force, the food passes through the oesophagus?

After swallowing a bolus of food, it travels down a muscular tube in the chest called the **oesophagus**, where the process of peristalsis begins.

**Peristalsis** is a series of wave-like muscle contractions that cause a **wave-like motion (force) **to move food to different processing locations in the digestive tract.

This movement helps food to travel through the stomach, where it is churned into a liquid mixture called chyme.

The word Parastalsis comes from ‘New Latin’ and is derived from the Greek “peristellein”, meaning "to wrap around".

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