Tile like flat cells line the following  

Options

A. pleura, DCT
B. DCT & PCT of nephron
C. lining of intestine
D. pleura and alveoli

Answer

To answer the question "Tile like flat cells line the following," we need to identify which of the given options contains squamous epithelial cells, which are characterized by their flat, tile-like appearance. Here’s the step-by-step solution:

### Step 1: Understand the Characteristics of Squamous Epithelium
- Squamous epithelium consists of flat, thin cells that are arranged closely together, resembling tiles. This type of epithelium is typically found in areas where diffusion or filtration occurs due to its thinness.

**Hint:** Remember that squamous epithelium is known for its flat, tile-like structure.

### Step 2: Analyze the Options
- **Option 1: Pleura and DCT**
- The pleura is the membrane covering the lungs and is lined with squamous epithelium. However, the DCT (Distal Convoluted Tubule) of the nephron is lined with cuboidal epithelial cells, not squamous. Thus, this option is incorrect.

**Hint:** Identify which structures are lined with squamous epithelium.

- **Option 2: PCT and DCT of nephron**
- The PCT (Proximal Convoluted Tubule) and DCT are also parts of the nephron and are lined with simple cuboidal epithelial cells. Therefore, this option is also incorrect.

**Hint:** Recall the type of epithelium that lines renal tubules.

- **Option 3: Lining of intestine**
- The intestine is lined with simple columnar epithelial cells, which are not flat. Hence, this option is incorrect.

**Hint:** Think about the structure of the intestinal lining.

- **Option 4: Pleura and alveoli**
- Both the pleura and alveoli (air sacs in the lungs) are lined with squamous epithelial cells. This makes this option correct as both structures contain tile-like flat cells.

**Hint:** Consider the respiratory structures that are involved in gas exchange.

### Step 3: Conclusion
The correct answer is **Pleura and alveoli**, as both are lined with squamous epithelial cells, which are tile-like and flat.

**Final Answer:** Pleura and alveoli.