Bachmann's bundle
Bachmann's bundle | |
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Anatomical terminology |
In the
History
In 1916, Jean George Bachmann conducted canine experiments. He found that clamping the muscular bundle of fibers that connects the atria caused a significant conduction delay.[3]
Structure
Bachman's bundle receives its blood supply from the sinoatrial nodal artery (right, left or both).[4]
Besides Bachmann's bundle, the other three conduction tracts that constitute the atrial conduction system are known as the
Function
The normal cardiac rhythm originates in the sinoatrial node, which is located in the right atrium near the superior vena cava. From there, the electrical activation spreads throughout the right atrium. There are at least four locations where the activation can pass to the left atrium. Apart from Bachmann's bundle these are the anterior interatrial septum, posterior interatrial septum, and the coronary sinus.[5] Because it originates close to the sinoatrial node and consists of long parallel fibers, Bachmann's bundle is, during sinus rhythm, the first of these connections to activate the left atrium.
See also
References
- ^ "19.2 Cardiac Muscle and Electrical Activity - Anatomy and Physiology | OpenStax". openstax.org. Retrieved 28 August 2022.
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- PMID 16105015.
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