Final answer:
Bachmann's bundle, found in the heart, is part of the cardiac conduction system and is responsible for transmitting impulses from the right atrium to the left atrium.
Step-by-step explanation:
The Bachmann's bundle, which is also known as the interatrial band, is a group of specialized cardiac conducting cells. It is responsible for transmitting the electrical impulse directly from the sinoatrial (SA) node located in the right atrium to the left atrium, ensuring that both atria contract in a coordinated manner. The presence of this bundle facilitates simultaneous atrial contraction which is important for efficient heart function.