Hierarchy Of The Human Body: The human body is organized into a hierarchy of different levels. From the simplest to the most complex, they are the chemical level, cellular level, tissue, organ, and system.
This fascinating (and visually appealing) brain map was created in 1957 by compiling virtually all that was known about the localization of brain's functions at the time. From: S. Polyak, The Vertebrate Visual System (The University of Chicago Press, 1957). Reproduced in: R.L. Savoy, History and future directions of human brain mapping and functional neuroimaging (Acta Psychologica 107, 2001, 9-42).