Define emulsification.

Explanation

**Step-by-Step Solution:**

1. **Understanding Emulsification**: Emulsification is a process that involves the breakdown of large fat globules into smaller droplets. This is crucial for the digestion and absorption of fats in the body.

2. **Role of Bile Salts**: Bile salts, which are produced by the liver and stored in the gallbladder, play a key role in emulsification. They help to disperse the fat globules in the aqueous environment of the intestine.

3. **Formation of Micelles**: During emulsification, bile salts surround the fat droplets and form structures known as micelles. A micelle consists of a hydrophilic (water-attracting) outer layer and a hydrophobic (water-repelling) inner core.

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