Bundle branch

Bundle Branch

A bundle branch is a part of the electrical conduction system of the heart that delivers electrical impulses to the ventricles. It is divided into two branches, the right bundle branch and the left bundle branch. These branches are responsible for ensuring the synchronized contraction of the ventricles, which is essential for effective pumping of blood.

Anatomy

The bundle branches originate from the bundle of His, which itself is a continuation of the atrioventricular node. The bundle of His splits into the right bundle branch and the left bundle branch in the interventricular septum. The right bundle branch carries impulses to the right ventricle, while the left bundle branch carries impulses to the left ventricle.

Function

The primary function of the bundle branches is to transmit electrical impulses from the atrioventricular node to the ventricles. This ensures that the ventricles contract in a coordinated manner, allowing for efficient pumping of blood from the heart to the rest of the body.

Clinical significance

Abnormalities in the bundle branches can lead to a condition known as bundle branch block. This can occur in either the right or left bundle branch. Bundle branch block can cause a delay or complete blockage of the electrical impulses from reaching the ventricles. This can result in an abnormal heart rhythm, known as arrhythmia, and can potentially lead to more serious heart conditions.

See also

• Cardiac conduction system
• Electrocardiography
• Bundle of His
• Bundle branch block