Intercalated discs are found in which type of muscle tissue?

• A. Dense regular connective tissue
• B. Cardiac muscle
• C. Skeletal muscle
• D. Smooth muscle

Answer: (B)

Verified step by step guidance

1. Step 1: Understand the types of muscle tissue in the human body: skeletal muscle, smooth muscle, and cardiac muscle.
2. Step 2: Recall that intercalated discs are specialized connections between cells that facilitate synchronized contraction and electrical coupling.
3. Step 3: Recognize that intercalated discs are unique to cardiac muscle tissue, where they help coordinate heartbeats by connecting cardiac muscle cells.
4. Step 4: Note that skeletal muscle and smooth muscle do not have intercalated discs; skeletal muscle cells are multinucleated and striated, while smooth muscle cells are spindle-shaped and lack striations.
5. Step 5: Conclude that the presence of intercalated discs is a defining feature of cardiac muscle tissue.