It is used to control the purchasing of products and services from external suppliers. Dendrites are the tree-like branches that conduct signals from other neural cells into the neurons they are attached to. Think of them like antennas picking up signals from other brain cells. The more antennas you have and the bigger they are, the more signals you’ll pick up. Learning a new skill like chess-playing causes dendrites to grow. But that growth doesn’t stop once you’ve learned the game; interaction with people in challenging activities also fuels dendrite growth, and chess is a perfect example.Having teenagers play chess might just save their lives. It goes like this: one of the last parts of the brain to develop is the prefrontal cortex, the area of the brain responsible for planning, judgment, and self-control.