What is the purpose of the cellular junctions in the intercalated discs?

Explanation

**Step-by-Step Solution:**

1. **Definition of Intercalated Discs**: Intercalated discs are specialized structures found in cardiac muscle tissue. They connect individual heart muscle cells (cardiomyocytes) to each other.

2. **Types of Cellular Junctions**: Intercalated discs contain three main types of cellular junctions: desmosomes, fascia adherens, and gap junctions. Each type plays a specific role in the function of cardiac muscle.

3. **Role of Desmosomes**: Desmosomes are strong adhesion junctions that hold adjacent cardiac muscle cells together. They provide mechanical strength and stability, ensuring that the cells do not separate during the intense contractions of the heart.

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