‘Bundle of His' is a group of

Options

A. ganglia
B. nerve fibres
C. muscle fibres
D. connective tissue

Explanation

To answer the question "‘Bundle of His' is a group of," we can follow these steps:

### Step 1: Understand the Bundle of His
The Bundle of His is a structure in the heart that plays a crucial role in the cardiac conduction system. It is responsible for transmitting electrical impulses from the atrioventricular (AV) node to the ventricles.

### Step 2: Identify the Composition
The Bundle of His is composed of specialized muscle fibers. These fibers are different from regular muscle fibers as they are modified to conduct electrical signals efficiently.

### Step 3: Determine the Origin
The Bundle of His originates from the AV node, which is located between the atria and ventricles of the heart. This structure is essential for coordinating the contraction of the heart chambers.

### Step 4: Function of the Bundle of His
The primary function of the Bundle of His is to ensure that the ventricles contract in a coordinated manner, allowing for effective pumping of blood. It does this by transmitting impulses to the Purkinje fibers, which further spread the signal throughout the ventricles.

### Step 5: Choose the Correct Option
Given the options provided:
- Ganglia
- Nerve fibers
- Muscle fibers
- Connective tissue

The correct answer is "muscle fibers" since the Bundle of His consists of specialized muscle fibers that facilitate the conduction of electrical impulses.

### Final Answer
The Bundle of His is a group of **muscle fibers**.

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