All things must come to an end. This is particularly true for neurons, especially the extensions called axons that transmit electrochemical signals to other nerve cells. Without controlled termination of individual neuron growth, the efficient and accurate construction of a nervous system is in serious jeopardy.
Hardwiring of the Brain Is Genetically Pre-programmed – Researchers now Understand Better How Neurons Implement the Blueprint for the Brain. The human brain contains roughly 100 billion neurons. Information
among them is transmitted via a complex network of
nerve fibers. Hardwiring of most of this network takes place before
birth according to a genetic blueprint, that is without external
influences playing a role.