Adult Echocardiography Practice Exam

Where is torus aorticus typically found?

1. Left atrial appendage

2. Left ventricle

3. Right atrium

4. Right ventricle

The correct answer is: Right atrium

The torus aorticus is a normal anatomical structure, specifically a bulge or ridge that is found at the root of the aorta, just above the aortic valve, within the right atrium. This structure serves as an embryological remnant and is formed from the continuity of the aorta and the right atrium. It is best visualized during imaging studies like echocardiograms, particularly in certain views where the anatomy can be seen clearly. Understanding the anatomy helps in identifying where the torus aorticus is located and why it is seen in the right atrium instead of the other proposed locations. The left atrial appendage is involved in the left atrium's functions, while the left ventricle and right ventricle are parts of the heart that do not contain the torus aorticus. The placement of this structure aids in distinguishing normal cardiac anatomy from potential pathologies when interpreting echocardiographic images.