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[The muscular atrioventricular septum]
Bulletin De L'Association Des Anatomistes
|September 1, 1982
Summary
The atrio-ventricular septum, a crucial cardiac structure, has both membranous and muscular components. Understanding its anatomy is vital for surgical correction of common atrio-ventricular canal defects.
Area of Science:
- Cardiovascular Anatomy
- Cardiac Surgery
Context:
- The atrio-ventricular septum separates the right atrium from the left ventricle outflow tract.
- It is anatomically related to the conduction system and vascular supply of the heart.
Purpose:
- To describe the anatomical characteristics of the atrio-ventricular septum.
- To highlight its importance in understanding and surgically correcting common atrio-ventricular canal defects.
Summary:
- The atrio-ventricular septum comprises a superior membranous portion and an inferior muscular portion.
- Its posterior-inferior border is variable due to fat content at the crux of the heart.
- This septum is critical for understanding the "carrefour" of cardiac chambers and the conduction system.
Impact:
- Provides a detailed anatomical understanding essential for cardiac surgeons.
- Aids in the diagnosis and surgical planning for congenital heart defects like common atrio-ventricular canal.