What is the role of Atrio-ventricular bundle in the functioning of heart?

Explanation

### Step-by-Step Solution:

1. **Understanding the Structure**: The atrio-ventricular (AV) bundle, also known as the bundle of His, is a crucial part of the heart's conduction system. It is located between the atria and the ventricles.

2. **Function of the AV Bundle**: The primary role of the AV bundle is to conduct electrical impulses from the atria (the upper chambers of the heart) to the ventricles (the lower chambers).

3. **Impulse Transmission**: When the heart beats, the electrical impulses initiate in the sinoatrial (SA) node, which is located in the right atrium. These impulses cause the atria to contract and pump blood into the ventricles.

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