The human body is one of the most complex and fascinating organisms on the planet. For hundreds of thousands of years, its evolved and changed in order to become what it is today. For the majority of human existence, knowledge of the workings and physicality of the human body remained relatively unknown. However, with the development of modern science and medicine, we now know more than we could have ever imagined. Today, most people have a basic knowledge of anatomy that would have stumped others only a few hundred years ago. So test your knowledge and see if you know some basic facts about your own body.