Which one of the following is incorrect regarding compound epithelium ?

Options

A. Multi - layered with no stretchability.
B. Cover the moist surface of buccal cavity and pharynz.
C. Provide protection against chemical and mechanical stress.
D. They play a vital role in secretion and absorption.

Answer

To solve the question regarding which statement is incorrect about compound epithelium, we can analyze each of the provided options step by step.

### Step-by-Step Solution:

1. **Understanding Compound Epithelium**:
- Compound epithelium is made up of multiple layers of cells. This structure provides a protective barrier and is typically found in areas subject to abrasion or wear.

2. **Evaluating the Statements**:
- **Statement 1**: "Multilayered with no flexibility."
- This statement is **correct**. Compound epithelium is indeed multilayered and lacks flexibility because of its dense structure, which is designed for protection.

- **Statement 2**: "Covers the moist surface of the buccal cavity and pharynx."
- This statement is also **correct**. Compound epithelium is found in the buccal cavity and pharynx, where it covers moist surfaces and protects underlying tissues.

- **Statement 3**: "Provide protection against the chemical and mechanical stress."
- This statement is **correct** as well. The primary function of compound epithelium is to provide protection against various stresses, including chemical and mechanical.

- **Statement 4**: "They play a vital role in the secretion and absorption."
- This statement is **incorrect**. Compound epithelium does not primarily function in secretion and absorption; these functions are mainly associated with simple epithelium. Instead, compound epithelium is more focused on providing protection.

3. **Conclusion**:
- The incorrect statement regarding compound epithelium is **Option 4**: "They play a vital role in the secretion and absorption."

### Final Answer:
**Option 4** is the incorrect statement regarding compound epithelium.

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