<unk> , the process of movement, is described using specific<unk><unk> .<unk>  includes movement of organs, joints, limbs, and specific sections of the body. The<unk> nology used describes this<unk>  according to its direction relative to the<unk>  position of the body parts involved. Anatomists and others use a unified set of<unk>  to describe most of the movements, although other, more specialized<unk>  are necessary for describing unique movements such as those of the hands, feet, and eyes. In general,<unk>  is classified according to the<unk>  plane it occurs in. Flexion and extension are examples of angular<unk> s, in which two axes of a joint are brought closer together or moved further apart. Rotational<unk>  may occur at other joints, for example the shoulder, and are described as internal or external. Other<unk> , such as elevation and depression, describe movement above or below the horizontal plane. Many<unk><unk>  derive from Latin<unk>  with the same meaning.
Anatomical terms of motion
Talairach coordinates
Surgical positions
Neuroscience in space
Gross anatomy
AfterImage
Nuclear technology
Anatomy