Peristalsis

The video explains how food moves through the digestive system, starting with the esophagus, which uses muscle contractions to push food to the stomach. It also covers reverse peristalsis in some mammals, like cattle and giraffes, which allows them to re-chew semi-digested food to break down fibrous plant material for easier digestion.

What is the role of muscles in the esophagus during swallowing?

What happens to the food when you swallow?

Describe the process of reverse peristalsis in some mammals.

Why do some mammals re-chew their food?

How does re-chewing help in digestion?