Cell junction facilitating cell to cell communication is

Options

A. Tight junction
B. Adhering junction
C. Gap junction
D. Desmosomes

Answer

**Step-by-Step Solution:**

1. **Understanding Cell Junctions**: Begin by recognizing that cell junctions are specialized structures that connect cells together and facilitate communication between them.

2. **Identifying Types of Cell Junctions**: There are several types of cell junctions, including tight junctions, adhering junctions, gap junctions, and desmosomes. Each type has a specific function.

3. **Analyzing Tight Junctions**: Tight junctions primarily serve to bind cells together and prevent the movement of molecules between them. They do not facilitate communication between cells.

4. **Examining Adhering Junctions**: Adhering junctions are involved in cell-to-cell adhesion and help regulate the cytoskeleton. However, they do not primarily function in communication.

5. **Exploring Gap Junctions**: Gap junctions are crucial for cell-to-cell communication. They allow the transfer of ions, small molecules, and electrical signals between adjacent cells, facilitating direct communication.

6. **Considering Desmosomes**: Desmosomes are another type of junction that provides structural support to tissues but does not facilitate communication between cells.

7. **Conclusion**: Based on the functions of the different types of cell junctions, the one that specifically facilitates cell-to-cell communication is the gap junction.

**Final Answer**: The cell junction facilitating cell-to-cell communication is the **gap junction** (Option 3).

---