What anatomical term is used for a structure located toward the outside of the body?

The term that describes a structure located toward the outside of the body is "external." In anatomical terminology, "external" is used to refer to anything that is situated on or towards the surface, as opposed to being buried deeper within tissue or organs. This term is commonly used in various contexts, such as discussing the external skin or external organs.

In contrast, "internal" refers to structures that are located within the body, away from the surface. "Superficial" is similar in meaning to external but is often used to describe structures that are closer to the surface rather than broadly defining anything located outside the body. "Deep," on the other hand, indicates structures that are located further away from the body surface, buried beneath layers of tissue. Hence, "external" is the most accurate term for indicating a position toward the outside of the body.