Identify the epithelial tissue found in respiratory tract.

Options

A. Cuboidal
B. Ciliated columnar
C. Squamous
D. Glandular

Answer

**Step-by-Step Solution:**

1. **Understanding Epithelial Tissues**: Epithelial tissues are classified based on the shape and arrangement of their cells. Common types include cuboidal, squamous, and columnar epithelium.

2. **Identifying the Types**:
- **Cuboidal Epithelium**: These are cube-shaped cells primarily involved in absorption and secretion, commonly found in the kidneys.
- **Squamous Epithelium**: These cells are flat and thin, forming a single layer, typically found in areas where diffusion occurs, like the alveoli in lungs.
- **Ciliated Columnar Epithelium**: These are tall, column-like cells that have tiny hair-like structures called cilia on their surface.

3. **Focus on the Respiratory Tract**: The respiratory tract requires a specific type of epithelial tissue that facilitates the movement of air and helps in the process of gaseous exchange.

4. **Identifying the Correct Tissue**: The ciliated columnar epithelium is specifically adapted for the respiratory tract. The cilia help to trap and move particles out of the airways, thus playing a crucial role in maintaining clear air passages.

5. **Conclusion**: Therefore, the epithelial tissue found in the respiratory tract is the **ciliated columnar epithelium**.

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