Selact the false statement with respect to epithelial tissue .

Options

A. It has a free surface
B. It faces body fluids sometimes
C. It faces the external environment sometimes
D. it sometimes forms middle structure part of organs

Answer

### Step-by-Step Solution:

1. **Understanding Epithelial Tissue**: Epithelial tissue is one of the four basic types of tissue in animals. It serves various functions, including protection, absorption, secretion, and sensation.

2. **Identifying Characteristics of Epithelial Tissue**:
- Epithelial tissue has a free surface that faces either the external environment or internal cavities.
- It is avascular, meaning it does not contain blood vessels and receives nutrients through diffusion from underlying connective tissues.
- Epithelial tissue can be classified based on the number of layers (simple or stratified) and the shape of the cells (squamous, cuboidal, or columnar).

3. **Analyzing the Statements**:
- **Statement 1**: "It has a free surface." - This is true as epithelial tissue always has one surface that is exposed.
- **Statement 2**: "It faces body fluid sometimes." - This is also true since epithelial tissue lines cavities and surfaces that may contain body fluids.
- **Statement 3**: "It faces the external environment sometimes." - This is true as well, especially in the case of skin epithelium.
- **Statement 4**: "It sometimes forms the middle structure part of the organs." - This statement is false. Epithelial tissue does not form the middle structure of organs; that role is typically filled by connective tissue.

4. **Conclusion**: The false statement regarding epithelial tissue is the fourth statement, which incorrectly suggests that epithelial tissue can form the middle structure of organs.

### Final Answer:
The false statement with respect to epithelial tissue is: "It sometimes forms the middle structure part of the organs."

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