The body of humans is described in the human anatomy group of articles. Humans have a wide range of variability in physical and other characteristics.
The evolution of Homo sapiens is characterized by a number of important trends:
* expansion of the brain cavity and brain itself, which is typically
about 1,400 cm³ in volume, well over twice that of a chimpanzee or
gorilla. Some physical anthropologists argue that a reorganization of
the structure of the brain is more important than cranial expansion itself.