Which word describes something located away from the center?

Which word describes something located away from the center?

• A. Central
• B. Proximal
• C. Distal
• D. Peripheral

Answer: (D)

Understanding how anatomical directions describe position relative to the center helps you pick the right term. Away from the center is described as peripheral, meaning the outer edge or boundary of a structure. The center is described as central, which is the opposite. Proximal and distal relate to distance along a limb from its attachment point to the body—proximal is closer to the trunk, distal is farther from the trunk. Those terms describe position along a limb rather than distance from the center of a structure, so they don’t fit as well. Distal is about how far a point is along the limb from the trunk, not specifically about being away from the center overall. Peripheral best conveys being located at the outer edge, away from the center.

Understanding how anatomical directions describe position relative to the center helps you pick the right term. Away from the center is described as peripheral, meaning the outer edge or boundary of a structure. The center is described as central, which is the opposite. Proximal and distal relate to distance along a limb from its attachment point to the body—proximal is closer to the trunk, distal is farther from the trunk. Those terms describe position along a limb rather than distance from the center of a structure, so they don’t fit as well. Distal is about how far a point is along the limb from the trunk, not specifically about being away from the center overall. Peripheral best conveys being located at the outer edge, away from the center.