Where is the crista terminalis located in the heart?

Study for the EPU Electrophysiology Exam with comprehensive questions and explanations. Enhance your knowledge with flashcards and a variety of question formats to ensure you are prepared to excel!

Multiple Choice

Where is the crista terminalis located in the heart?

Explanation:
The crista terminalis is a prominent muscular ridge inside the right atrium that marks the border between the smooth posterior wall (sinus venarum) and the rough, pectinated anterior wall. It runs from the opening of the superior vena cava down to the opening of the inferior vena cava along the lateral aspect of the atrial wall. Because of this position, the best description is the lateral free wall of the right atrium. It isn’t located in the left atrium, the posterior wall of the right atrium, or the right ventricle.

The crista terminalis is a prominent muscular ridge inside the right atrium that marks the border between the smooth posterior wall (sinus venarum) and the rough, pectinated anterior wall. It runs from the opening of the superior vena cava down to the opening of the inferior vena cava along the lateral aspect of the atrial wall. Because of this position, the best description is the lateral free wall of the right atrium. It isn’t located in the left atrium, the posterior wall of the right atrium, or the right ventricle.

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