Because the body can move in different ways, it is difficult to describe the position of a structure without agreeing on a standard body position. This standard position is called the anatomic position. All struc-tures are described in relationship to this position. In the anatomic position, the body is erect, with the feet parallel to each other and flat on the floor; the arms are at the sides of the body, with the palms of the hands turned forward and the fingers pointing straight down. The head and eyes are directed for-ward (see Figure 1.6).