<P> The terms "intermediate", "ipsilateral", "contralateral", "superficial", and "deep", while indicating directions, are relative terms and thus do not properly define fixed anatomical axes . Also, while the "rostrocaudal" and anteroposterior directionality are equivalent in a significant portion of the human body, they are different directions in other parts of the body . </P> <P> In anatomical terminology superior (from Latin, meaning "above") is used to refer to what is above something, and inferior (from Latin, meaning "below") to what is below it . For example, in the anatomical position the most superior part of the human body is the head, and the most inferior is the feet . As a second example, in humans the neck is superior to the chest but inferior to the head . </P> <P> Anterior refers to what is in front (from Latin ante, meaning "before") and posterior, what is to the back of the subject (from Latin post, meaning "after"). For example, in a dog the nose is anterior to the eyes and the tail is considered the most posterior part; in many fish the gill openings are posterior to the eyes, but anterior to the tail . </P> <P> Lateral (from Latin lateralis, meaning "to the side") refers to the sides of an animal, as in "left lateral" and "right lateral". The term medial (from Latin medius, meaning "middle") is used to refer to structures close to the centre of an organism, called the "median plane". For example, in a human, imagine a line down the center of the body from the head though the navel and going between the legs--the medial side of the foot would be the big toe side; the medial side of the knee would be the side adjacent to the other knee . To describe the sides of the knees touching each other would be "right medial" and "left medial". </P>

What means in front of when using anatomical directional terms