On the trunk, territories are called what?

• A. Regions
• B. Quadrants
• C. Hemispheres
• D. Segments

Answer: (B)

The trunk is divided into four fixed sections by two perpendicular lines crossing at the level of the belly button, creating four quadrants. This four-quadrant map—upper right, upper left, lower right, lower left—is the standard way to localize areas on the trunk, which is why the term used is quadrants.

The other terms don’t fit as precisely: “regions” is too vague for a defined four-part layout; “hemispheres” implies two halves, usually of the entire body or a larger structure; and “segments” suggests a linear sequence along the length rather than four cross-sectional areas.