What is the role of saliva in the digestion of food?

Explanation

**Step-by-Step Solution:**

1. **Moistening the Food:**
- Saliva plays a crucial role in moistening the food when we chew. This moisture helps in forming a soft mass of food, making it easier to chew and swallow.

2. **Lubrication:**
- The lubrication provided by saliva allows the food to move smoothly through the esophagus during swallowing. This is essential for the efficient passage of food from the mouth to the stomach.

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