Biological Bases of Behavior

## The Brain: Your Command Center Our thoughts, feelings, and actions all have roots in our biology. The brain and nervous system are like a supercomputer running our bodies. ### Brain Structures - **Cerebral Cortex:** Controls thinking, planning, and decision-making. - **Limbic System:** Handles emotions and memories. - **Brainstem:** Keeps us alive by controlling breathing and heart rate. ### How Neurons Work Neurons send messages using electrical impulses and chemicals called neurotransmitters. Imagine a chain of people passing notes—each neuron passes the message along. ### Genes and Behavior Genetics also play a role. Some traits, like eye color, are inherited, while others, like shyness, may be influenced by both genes and environment. ## Everyday Impact Knowing about the brain helps us understand things like why we get nervous before speaking in public or how medications can affect our mood.