Certified Cardiovascular Technician Practice Exam

What is another term for the sternal angle?

1. Manubrium

2. Angle of Louis

3. Xiphoid process

4. Costal margin

The correct answer is: Angle of Louis

The sternal angle, also known as the Angle of Louis, is an important anatomical landmark located at the junction between the manubrium and the body of the sternum. This angle is usually located around the second rib level and serves as a critical reference point for clinicians during physical examinations, as well as in procedures such as the placement of central venous lines or when assessing chest anatomy via imaging. The Angle of Louis helps in identifying the location of major structures in the thoracic cavity, including the aorta, trachea, and the bifurcation into the main bronchi. This anatomical feature is significant due to its contribution to properly orienting medical professionals during assessments and interventions related to cardiovascular health. Other terms listed, such as the manubrium and xiphoid process, refer to different parts of the sternum rather than the sternal angle itself. The costal margin indicates the area formed by the lower edges of the rib cage and represents a different anatomical region, thus not representing the sternal angle.