Differentiate between Simple epithelium and compound epithelium

Explanation

### Step-by-Step Solution

**1. Definition of Simple Epithelium and Compound Epithelium:**
- **Simple Epithelium:** This type of epithelium consists of a single layer of cells. It is primarily involved in absorption, secretion, and filtration.
- **Compound Epithelium:** This type consists of multiple layers of cells. It serves mainly as a protective barrier.

**Hint:** Remember that "simple" means one layer, while "compound" indicates multiple layers.

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