Dendrites Flowers of Intelligence Scientists estimate that the brain is made up of 100 billion cells. In the human, almost all brain cells are formed before birth.
Dendrites are extensions from the cell.
It is through these extensions that information is delivered to and from the cell. Brain cells can grow as many as 1 million billion dendrite connections - a universe of touch points. The greater the number of dendrites, the more information that can be processed. Dendrites grow as a result of stimulation from and interaction with the environment. With limited stimulation there is limited growth.