The brain is a highly complex organ in which around 86 billion nerve cells or neurons constantly talk to each other. All that chatter is what makes you cringe when someone steps on your foot, laugh at a joke or remember where you left your phone.

Not surprisingly, different parts of the brain have different jobs. The largest part is the cerebrum (the wrinkles and folds that you probably picture when you think of the brain); it’s covered by the cerebral cortex—what we often refer to as “gray matter.” The cerebrum handles higher brain functions like thoughts and actions; all the folds and wrinkles provide more surface for more information to be processed.

The brain stem is the powerhouse link between your brain and your spinal cord. It controls your heart rate, blood pressure and breathing. And the cerebellum is a wrinkled ball behind the rest of your brain. It helps coordinate movement by working with sensory information from your eyes, ears, and muscles.  

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