Final answer:
The prone position refers to lying face down in a horizontal position. It is used to describe the orientation of the body during physical examinations or surgical procedures.
Step-by-step explanation:
A body that is lying down is described as either prone or supine. Prone describes a face-down orientation, and supine describes a face up orientation.
These terms are sometimes used in describing the position of the body during specific physical examinations or surgical procedures.