Describe the anatomical term "proximal."

The anatomical term "proximal" refers to a location that is closer to the point of attachment of a limb to the trunk or to the origin of a structure. This definition is essential in anatomy as it helps to describe the relative positioning of different body parts. For instance, in reference to the arm, the shoulder is proximal to the elbow. Understanding this term is crucial for accurately conveying the locations of various anatomical structures.

The other definitions do not capture the essence of "proximal." For example, describing a location as farthest from the trunk misrepresents the meaning, as "proximal" indicates closeness rather than distance. Similarly, being on the same level or near the external surface pertains to concepts of orientation and positioning but does not imply anything about proximity to attachment points. Therefore, using the term "proximal" is integral for clarity in anatomical discussions related to descriptions of bodily structures and their relationships.