Which of the following epithelia covers the inner linings of trachea, large bronchi, and helps to remove mucus?

Options

A. Ciliated columnar
B. Pseudo-stratified epithelium
C. Compound epithelium
D. Cuboidal epithelium

Answer

To answer the question "Which of the following epithelia covers the inner linings of trachea, large bronchi, and helps to remove mucus?" we will analyze the options provided and identify the correct type of epithelium.

### Step-by-Step Solution:

1. **Identify the Options**: The options given are:
- Ciliated columnar pseudostratified epithelium
- Compound epithelium
- Cuboidal epithelium

2. **Understand the Function of the Epithelium**: The question specifies that the epithelium in question covers the inner linings of the trachea and large bronchi and is involved in the removal of mucus.

3. **Analyze Each Option**:
- **Ciliated Columnar Pseudostratified Epithelium**: This type of epithelium appears to be stratified due to the varying heights of the cells, but it is actually a single layer (simple epithelium). It contains cilia that help in moving mucus out of the respiratory tract.
- **Compound Epithelium**: This type of epithelium is typically found in areas subject to abrasion (like skin) and does not have the cilia necessary for mucus removal.
- **Cuboidal Epithelium**: This type of epithelium is generally involved in secretion and absorption, but it does not have the cilia necessary for mucus movement.

4. **Determine the Correct Answer**: Based on the analysis, the **Ciliated Columnar Pseudostratified Epithelium** is the correct answer as it covers the inner linings of the trachea and large bronchi and plays a crucial role in the removal of mucus through the action of cilia.

5. **Final Answer**: The correct type of epithelium is **Ciliated Columnar Pseudostratified Epithelium**.