Intercalated disc found in cardiac muscles are :

Options

A. Modified wall
B. Intercellular deposition of cell material
C. Gap junctions
D. None of these

Answer

### Step-by-Step Solution

1. **Understanding the Question**: The question asks about the intercalated discs found in cardiac muscles. We need to identify what these intercalated discs are associated with.

2. **Evaluating the Options**:
- **Option 1: Modified wall** - This option suggests that intercalated discs are a type of modified wall in cardiac muscles. This is incorrect because intercalated discs are not a structural wall but rather a specific feature of cardiac muscle cells.

- **Option 2: Intercellular deposition of cell material** - This option implies that intercalated discs are formed through the deposition of materials between cells. This is also incorrect, as intercalated discs are not formed through deposition but are specialized structures that connect cardiac muscle cells.

- **Option 3: Gap junctions** - This option states that intercalated discs are associated with gap junctions. This is correct because intercalated discs contain gap junctions that allow for electrical and chemical communication between cardiac muscle cells, facilitating synchronized contraction.

- **Option 4: None of these** - Since we have identified option 3 as correct, this option is also incorrect.

3. **Conclusion**: Based on the evaluation of the options, the correct answer is **Option 3: Gap junctions**.

### Final Answer
Intercalated discs found in cardiac muscles are **gap junctions**.

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