Page 29 - UNIT 3 Brain Building

Brain Building Answers

1. Brains start developing before birth and are not fully

developed until a person’s mid twenties.

2. Our early experiences create the foundations of brain architecture on which
later circuitry is built.

3. Our brain is made up of lots of cells called neurons.

4. Whenever we think, do or say anything, neurons pass information to each

other through an electrical signal.

5. Electrical signals sent between neurons creates a circuit. Every time we

repeat something, a coating around the trunk of the neuron (the axon) gets

thicker and the branches of the neuron (dendrites) get bushier. Scientists

think that this helps speed up the electrical signals between neurons.