Bundle of His is a group of -

Options

A. Ganglia
B. Nerve fibres
C. Muscular fibres
D. Connective tissue

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the Bundle of His and what it consists of.

2. **Location in the Heart**: The Bundle of His is located in the human heart. It is part of the cardiac conduction system.

3. **Components of the Cardiac Conduction System**: The cardiac conduction system includes several key structures:
- **SA Node (Sinoatrial Node)**: This is the natural pacemaker of the heart, located in the right atrium. It initiates the electrical impulses that cause the heart to beat.
- **AV Node (Atrioventricular Node)**: This node receives impulses from the SA node and transmits them to the Bundle of His.

4. **Structure of the Bundle of His**: The Bundle of His is a collection of heart muscle cells (myocardium) that transmits impulses from the AV node to the ventricles of the heart.

5. **Distribution of Impulses**: After the Bundle of His, the impulses are further distributed through the Purkinje fibers, which spread throughout the ventricles to ensure coordinated contraction.

6. **Conclusion**: Therefore, the Bundle of His is a group of specialized cardiac muscle fibers that play a crucial role in the conduction of electrical impulses in the heart.

**Final Answer**: The Bundle of His is a group of specialized cardiac muscle fibers.

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