Distal convoluted tubule is lined with

Options

A. Cuboidal epithelium
B. Ciliated squamous epithelium
C. Pseudostratified epithelium
D. Columnar epithelium

Answer

### Step-by-Step Solution:

1. **Understanding the Structure**: The distal convoluted tubule (DCT) is a part of the nephron, which is the functional unit of the kidney. It plays a crucial role in the excretory system.

2. **Identifying the Epithelium**: The DCT is lined with a specific type of epithelial tissue. We need to determine which type of epithelium is present in the DCT.

3. **Options Analysis**: The options provided are:
- A) Cuboidal epithelium
- B) Ciliated squamous epithelium
- C) Pseudostratified epithelium
- D) Columnar epithelium

4. **Function of the DCT**: The DCT is involved in selective reabsorption and secretion, which is essential for maintaining electrolyte balance and regulating blood pressure.

5. **Correct Epithelium Identification**: The type of epithelium that lines the DCT is simple cuboidal epithelium. This is because:
- Simple cuboidal epithelium allows for absorption and secretion.
- It is different from the proximal convoluted tubule (PCT), which also has cuboidal epithelium but is characterized by the presence of microvilli to increase surface area for absorption.

6. **Elimination of Incorrect Options**:
- **Ciliated squamous epithelium**: This type is found in areas requiring movement, such as the respiratory tract, and is not present in the DCT.
- **Pseudostratified epithelium**: This is typically found in the respiratory tract, such as the trachea, and is not found in the DCT.
- **Columnar epithelium**: This type is usually found in the intestinal tract and respiratory airways, not in the DCT.

7. **Conclusion**: Based on the analysis, the correct answer is **A) Cuboidal epithelium**.