Bundle of His

The bundle of His, also known as the atrioventricular bundle (AV bundle), is a collection of specialized muscle cells that is responsible for transmitting electrical signals from the atria to the ventricles of the heart.

Muscle or Nerve Fibres?

The bundle of His is made up of specialized muscle cells, also known as Purkinje fibers, which are modified cardiac muscle fibers that have a unique structure and function. These fibers are responsible for conducting electrical impulses throughout the ventricles of the heart, allowing for coordinated contractions and efficient pumping of blood.

Function of the Bundle of His

The bundle of His plays a crucial role in the normal functioning of the heart. When the electrical impulse generated by the sinoatrial (SA) node in the right atrium reaches the atrioventricular (AV) node, it is then transmitted to the bundle of His, which conducts the impulse down into the ventricles. This causes the ventricles to contract, pushing blood out of the heart and into the circulatory system.

Importance of Bundle of His

The bundle of His is essential for maintaining a regular heartbeat and proper blood circulation throughout the body. Damage or dysfunction of the bundle of His can lead to a variety of cardiac conditions, including heart block, ventricular arrhythmia, and heart failure.

Conclusion

In summary, the bundle of His is a specialized network of muscle cells that is responsible for transmitting electrical impulses from the atria to the ventricles of the heart, allowing for coordinated contractions and efficient pumping of blood. Its unique structure and function make it essential for maintaining a regular heartbeat and proper blood circulation throughout the body.