Which surface on the sternum articulates with the clavicle?

Which surface on the sternum articulates with the clavicle?

• A. Glenoid fossa
• B. Sternal articular surface
• C. Acromial surface
• D. Costal facet

Answer: (B)

The key idea is that the clavicle connects to the sternum at the sternoclavicular joint, where the medial end of the clavicle sits against the sternal articular surface on the manubrium. This sternal articular surface, or the clavicular notch, is the specific area of the sternum that articulates with the clavicle. The other options refer to structures that articulate with different bones: the glenoid fossa is on the scapula, the acromial surface relates to the acromion area of the scapula/clavicle, and the costal facets articulate with the ribs’ costal cartilages. So the surface on the sternum that attaches to the clavicle is the sternal articular surface.

The key idea is that the clavicle connects to the sternum at the sternoclavicular joint, where the medial end of the clavicle sits against the sternal articular surface on the manubrium. This sternal articular surface, or the clavicular notch, is the specific area of the sternum that articulates with the clavicle. The other options refer to structures that articulate with different bones: the glenoid fossa is on the scapula, the acromial surface relates to the acromion area of the scapula/clavicle, and the costal facets articulate with the ribs’ costal cartilages. So the surface on the sternum that attaches to the clavicle is the sternal articular surface.