Which of the following statement is true ?

Options

A. Cells of epithelium are compactly packed with little intercellular matrix
B. Simple epithelium lines our body cavity, ducts and tubes
C. Compound epithelium has protective function
D. All of these

Answer

To determine which statement is true regarding epithelial tissue, we will analyze each option step by step.

### Step-by-Step Solution:

1. **Examine the First Statement:**
- The first statement claims that "cells of epithelium are compactly packed with little intercellular matrix."
- **Analysis:** Epithelial cells are indeed closely packed together, with minimal intercellular space. This characteristic is a defining feature of epithelial tissue.
- **Conclusion:** This statement is **true**.

2. **Examine the Second Statement:**
- The second statement asserts that "simple epithelium lines body cavity, ducts, and tubes."
- **Analysis:** Simple epithelium, which includes simple squamous, cuboidal, and columnar types, does line various body cavities, ducts, and tubes. For instance, simple squamous epithelium is found in the air sacs of the lungs, while simple cuboidal epithelium is present in glandular ducts.
- **Conclusion:** This statement is also **true**.

3. **Examine the Third Statement:**
- The third statement states that "compound epithelium has a protective function."
- **Analysis:** Compound epithelium serves primarily to protect underlying tissues from damage, pathogens, and other harmful factors. It is structured to provide a barrier, which aligns with its protective role.
- **Conclusion:** This statement is **true** as well.

4. **Evaluate All Statements:**
- Since all three statements have been analyzed and found to be true, we can conclude that the correct answer is that all of the above options are correct.

5. **Final Conclusion:**
- Therefore, the correct option is **Option 4: All of the above statements are true**.