Sulcus terminalis cordis

Sulcus Terminalis Cordis

The Sulcus Terminalis Cordis is a prominent anatomical feature of the heart. It is a groove that separates the atria from the ventricles and plays an important role in the conduction system of the heart.

Anatomy

The Sulcus Terminalis Cordis is located on the external surface of the heart. It extends from the superior vena cava to the inferior vena cava, forming a crescent-shaped boundary between the atria and the ventricles. It is also known as the terminal groove or the atrioventricular groove.

Function

The Sulcus Terminalis Cordis serves as a landmark for the electrical conduction system of the heart. It contains the sinoatrial (SA) node, which is responsible for initiating the electrical impulses that regulate the heart's rhythm. The SA node is located at the superior end of the Sulcus Terminalis Cordis, near the opening of the superior vena cava.

Clinical Significance

Abnormalities or variations in the Sulcus Terminalis Cordis can have clinical implications. For example, a prominent Sulcus Terminalis Cordis can be associated with an increased risk of arrhythmias or atrial fibrillation. Additionally, certain congenital heart defects may involve abnormalities in the development of the Sulcus Terminalis Cordis.

See Also

• Heart
• Atria
• Ventricles
• Conduction System of the Heart