Adult Echocardiography Practice Exam

Which cusp is nearest the ventricular septum?

1. left coronary cusp

2. non-coronary cusp

3. lateral cusp

4. right coronary cusp

The correct answer is: right coronary cusp

The right coronary cusp is situated closest to the ventricular septum. In the anatomy of the aortic valve, there are three cusps: the left coronary cusp, the right coronary cusp, and the non-coronary cusp. The orientation of these cusps is crucial for understanding their relationship with surrounding structures. The right coronary cusp, as it is positioned, faces toward the right ventricle and is adjacent to the ventricular septum, which separates the right and left ventricles. This anatomical proximity is significant in echocardiography as it helps in identifying the valve structure and assessing for any potential abnormalities or pathologies related to the aortic and ventricular anatomy. The left coronary cusp is further away from the septum, pointing towards the left ventricle, while the non-coronary cusp is also positioned away from the septum. The term "lateral cusp" is not typically used in the context of the aortic valve anatomy and may lead to some confusion. Understanding the spatial relationship between these cusps is essential in echocardiography for accurate imaging and diagnosis. In summary, the right coronary cusp rests nearest to the ventricular septum, making it the correct answer.