Question

fill in the blank with the regional term that is being described. the middle of the chest (where the breastbone is found) is called the choose your answer... region.

Explanation:

The sternal region (or the mediastinal region, but more commonly in terms of surface anatomy, the sternal region) refers to the middle of the chest where the breastbone (sternum) is located. In anatomical regional terminology, the area over the sternum in the middle of the chest is called the sternal region. Another relevant term could be "mediastinal" but for the surface anatomy description here (where the breastbone is found externally), "sternal" is the appropriate regional term.

Answer:

sternal (or mediastinal, but sternal is more direct for the breastbone's location on the chest surface)