Question

The selection released in mouth
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Answer 1

Answer:

Mechanical and chemical digestion begin in the mouth with the chewing of food and the release of saliva, which starts carbohydrate digestion.

The epiglottis covers the trachea so the bolus (ball of chewed food) does not go down into the trachea or lungs, but rather into the esophagus.

The tongue positions the bolus for swallowing and then peristalsis pushes the bolus down the esophagus into the stomach.

In the stomach, acids and enzymes are secreted to break down food into its nutrient components.

The churning of the stomach helps to mix the digestive juices with the food, turning it into a substance called chyme.