Bowman's capsule, loop of Henle and alveoli of lungs share one common character. They are :

Options

A. All ciliated
B. Lined by pavement epithelium
C. All secretory
D. All stratified

Answer

**Step-by-Step Solution:**

1. **Identify the Structures**: The question asks about the common character shared by Bowman's capsule, the loop of Henle, and the alveoli of the lungs. We need to analyze each structure.

2. **Examine the Options**: The first option is "All Ciliated". We know that cilia are hair-like structures that help in movement and are not present in these three structures. Therefore, this option can be eliminated.

3. **Consider the Second Option**: The next option is "Pavement epithelium or Squamous epithelium". Squamous epithelium consists of thin, flat cells that are closely packed, resembling a pavement. This type of epithelium is known for its protective functions and is involved in processes like filtration and diffusion.

4. **Identify the Presence of Squamous Epithelium**:
- **Bowman's Capsule**: The inner lining of Bowman's capsule is made up of squamous epithelium, which allows for filtration of blood.
- **Loop of Henle**: The descending limb of the loop of Henle is also lined with squamous epithelium, facilitating the movement of water and solutes.
- **Alveoli**: The alveoli in the lungs are lined with simple squamous epithelium, which allows for efficient gas exchange (diffusion of oxygen and carbon dioxide).

5. **Conclusion**: Since all three structures (Bowman's capsule, loop of Henle, and alveoli) are lined with squamous epithelium, we conclude that the common character they share is that they are all lined by pavement epithelium.

**Final Answer**: They are all lined by pavement epithelium.

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