Bachmann's bundle

Bachmann's bundle
Image showing Bachmann's bundle
Anatomical terminology

In the heart's conduction system, Bachmann's bundle (also called the Bachmann bundle or the interatrial band)[1] is a branch of the anterior internodal tract that resides on the inner wall of the left atrium. It is a broad band of cardiac muscle that passes from the right atrium, between the superior vena cava and the ascending aorta.[2] Bachmann's bundle is, during normal sinus rhythm, the preferential path for electrical activation of the left atrium. It is therefore considered to be part of the "atrial conduction system" of the heart.

  1. ^ "19.2 Cardiac Muscle and Electrical Activity - Anatomy and Physiology | OpenStax". openstax.org. Retrieved 28 August 2022.
  2. ^ James, Thomas N. (1 October 1963). "The connecting pathways between the sinus node and A-V node and between the right and the left atrium in the human heart". American Heart Journal. 66 (4): 498–508. doi:10.1016/0002-8703(63)90382-X.

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