Rantoul is a village in Champaign County, Illinois, United States. The population was 12,941 at the 2010 census. The current mayor is Chuck Smith, who was elected in 2013. The community was named after Robert Rantoul, Jr., a U.S. representative from Massachusetts, and a director of the Illinois Central Railroad.[4]
The table below shows brains proportional to the size of the animal pictured. Click on the pictures of the animals to read specific information about the species. approx Human brain length=15cm. approx brain weight=1400g.
For example, the number of neurons peaks even before birth; some 100 billion are formed during just the first 5 months of gestation. In spite of the great number of neurons present at birth, brain size itself increases more gradually: a newbornâs brain is only about one quarter the size of an adultâs. It grows to about 80% of adult size by 3 years of age and 90% by age 5. This growth is largely due to changes in individual neurons, which are structured much like trees. Thus, each brain cell begins as a tiny sapling and only gradually sprouts its hundreds of long, branching dendrites.