The collarbone is _________ between the breastbone and shoulder.

• A. Proximal
• B. Medial
• C. Intermediate
• D. Anterior

Answer: (C)

This question tests how we use anatomical direction terms to describe location relative to other structures. The breastbone (sternum) sits along the midline of the chest, and the shoulder lies laterally. The collarbone runs from the sternum toward the shoulder, placing it between these two reference points. That positioning is best described as intermediate—between medial and lateral, across the upper chest. Proximal would imply closeness to the trunk along a limb, which isn’t the most appropriate description here, and anterior would describe being in front of something rather than between the midline and the shoulder. So the collarbone is intermediate between the breastbone and shoulder.