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Collecting tubes are lined by...

Collecting tubes are lined by

A

Squamous epithelium

B

Columnar epithelium

C

Cuboidal epithelium

D

Cuboidal and columnar epithelium

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Structure**: The collecting tubes are part of the nephron, which is the functional unit of the kidney. They play a crucial role in the excretion process by collecting the filtrate produced by the nephron. 2. **Identifying the Epithelium Type**: The options provided are squamous, columnar, cuboidal, and a combination of cuboidal or columnar epithelium. We need to determine which type of epithelium lines the collecting tubes. 3. **Analyzing the Function of the Collecting Tubes**: The collecting tubes are involved in the reabsorption of water and solutes. This requires a specific type of epithelial tissue that can facilitate these processes. 4. **Recognizing the Characteristics of Epithelial Cells**: - **Squamous Epithelium**: Composed of flat cells, which are not suitable for the functions of the collecting tubes. - **Columnar Epithelium**: Composed of tall, column-like cells, which are also not present in the collecting tubes. - **Cuboidal Epithelium**: Composed of cube-shaped cells, which are ideal for secretion and absorption, making them suitable for lining the collecting tubes. 5. **Conclusion**: Based on the analysis, the correct answer is that the collecting tubes are lined by cuboidal epithelium. This type of epithelium allows for efficient absorption and secretion processes necessary for kidney function. **Final Answer**: Collecting tubes are lined by cuboidal epithelium. ---
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