Movement away from the median plane of the body or one of its parts

Movement toward the median plane of the body

Pertaining to the midline of the body or structure

Pertaining to a side

Toward the head or upper portion of a structure

Away from the head, or toward the tail or lower part of a structure

Nearer to the center (trunk of the body) or to the point of attachment to the body

Further from the center (trunk of the body) or from the point of attachment to the body

Near the front of the body

Near the back of the body

Pertaining to the outer wall of the body cavity

Pertaining to the viscera, or internal organs, especially the abdominal organs

Lying horizontal with the face downward, or indicating the hand with palms turned downward

Lying on the back with the face upward, or indicating the position of the hand or foot with the palm or foot facing upward

Turning inward or inside out

Turning outward

Pertaining to the palm of the hand

Pertaining to the sole of the foot

Toward the surface of the body

Away from the surface of the body (internal)

are used to indicate the position of a structure in relation to another structure.