The anatomical term is derived from the ancient Greek and means dissection. Dissection of cadavers was in fact the first and most important technique for studying the human body. Dissection of cadavers is a method for describing the organs and their relationship to one another as perceived by the human eye (macroscopic anatomy). If we then wish to examine the fine structure of organs, we must make use of instruments used to magnify images: lenses, microscopes etc. (microscopic anatomy). The science of human anatomy may be defined as the study of the form and structure (macroscopic and microscopic) of individual human body parts. Human anatomy is thus a biological discipline (biology being the science of vital phenomena; the science of life). Human anatomy and human physiology (science of vital body functions) jointly allow us to understand how a healthy human body is made and how it works. The science of human anatomy is also of fundamental importance in the training of future doctors and more particularly surgeons, who must become acquainted with and be able to recognize the parts of the body.