Cadavers not only provide medical students and doctors knowledge about the different functions of the human body, but they also provide multiple causes of malfunction within the human body.  Galen (250 AD), a Greek physician, was one of the first to associate events that occurred during a human's life with the internal ramifications found later after death. A simple autopsy of a cadaver can help determine origins of deadly diseases or disorders.  Autopsies also can provide information on how certain drugs or procedures have been effective within the cadaver and how humans respond to certain injuries.  