The human brain is the center of the human nervous system.
It has the same general structure as the brains of other mammals, but is larger than expected on the basis of body size among other primates.
The brain is one of the largest and most complex organs in the human body. It is made up of more than 100 billion nerves that communicate in trillions of connections called synapses.
The brain performs an incredible number of tasks including the following:
It controls body temperature, blood pressure, heart rate and breathing.
It accepts a flood of information about the world around you from your various senses (seeing, hearing, smelling, tasting and touching).
It handles your physical movement when walking, talking, standing or sitting.
It lets you think, dream, reason and experience emotions.
All of these tasks are coordinated, controlled and regulated by an organ that is about the size of a small head of cauliflower.