How many of the following junctions are found in epithelium tissue :-

Options

A. Four
B. Three
C. Two
D. One

Answer

To answer the question about how many types of junctions are found in epithelial tissue, we will identify and describe each type of junction as follows:

### Step-by-Step Solution:

1. **Identify the Types of Junctions**:
- The epithelial tissue contains several types of junctions that facilitate communication and adhesion between cells. The main types include:
- Tight Junctions
- Intermediate Junctions
- Gap Junctions
- Desmosomes
- Interdigitation

2. **Describe Each Junction**:
- **Tight Junctions**: These junctions completely fuse the membranes of adjacent cells, preventing leakage of substances between them. They are crucial for maintaining the integrity of epithelial barriers.
- **Intermediate Junctions**: Also known as adherens junctions, these junctions are formed by actin filaments and provide mechanical stability to tissues by linking the cytoskeletons of adjacent cells.
- **Gap Junctions**: These junctions allow for direct communication between adjacent cells through cytoplasmic connections, facilitating the transfer of ions and small molecules.
- **Desmosomes**: These junctions provide strong adhesion between cells, using proteins such as desmogleins and keratin filaments to anchor cells together, particularly in tissues that experience significant mechanical stress.
- **Interdigitation**: This type of junction involves interlocking of cell membranes, providing increased surface area for adhesion and allowing for more stretchability between cells.

3. **Count the Types**:
- After identifying and describing the junctions, we can count them. There are five types of junctions found in epithelial tissue:
1. Tight Junctions
2. Intermediate Junctions
3. Gap Junctions
4. Desmosomes
5. Interdigitation

4. **Conclusion**:
- Therefore, the total number of junctions found in epithelial tissue is **five**.