Part of epidermis that keeps out unwanted particles is called

Options

A. columnar epithelium
B. squamous epithelium
C. ciliated epithelium
D. cuboidal epithelium

Answer

**Step-by-Step Text Solution:**

1. **Understanding the Question**: The question asks for the part of the epidermis that keeps out unwanted particles. The epidermis is the outermost layer of the skin, and it is composed of different types of epithelial cells.

2. **Identifying the Types of Epithelium**: There are several types of epithelial cells mentioned:
- **Columnar Epithelium**: This type lines certain surfaces but is not primarily responsible for keeping out unwanted particles.
- **Squamous Epithelium**: This is a flat layer found in the basal lamina, which is also not the main protective layer.
- **Ciliated Epithelium**: This type has tiny hair-like structures (cilia) that help to trap and move unwanted particles out of the body.
- **Cuboidal Epithelium**: This type is involved in secretion and absorption, not in protection.

3. **Analyzing the Functions**: Among the options, ciliated epithelium is specifically designed to keep unwanted particles out. The cilia can trap dust, pathogens, and other particles, preventing them from entering the body.

4. **Conclusion**: Based on the analysis, the correct answer to the question is the ciliated epithelium, as it is the part of the epidermis that effectively keeps out unwanted particles.

**Final Answer**: Ciliated epithelium.

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