Which term describes a position lying face up?

The term that describes a position lying face up is "supine." In medical terminology, "supine" specifically refers to the body being in a horizontal position with the back on the ground or surface, allowing the face to be directed upward. This position is significant in various medical assessments, examinations, and treatment protocols as it provides access to different areas of the body and can enhance patient comfort during certain procedures or evaluations.

In contrast, the term "prone" refers to a position where the body is lying face down. "Neutral" typically describes a position that is neither flexed nor extended, and "supra" is a prefix meaning "above" or "over," but it is not used to describe body positioning in this context. Understanding these terms is essential for effective communication in clinical settings and ensures clarity when discussing patient positioning and care.