Screwdriver

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The human brain is a complex and highly adaptable organ that plays a vital role in controlling the body's functions and facilitating thought and movement. It consists of billions of nerve cells or neurons that are connected by synapses, allowing for the transmission of electrical signals. The brain is protected by the skull and surrounded by cerebrospinal fluid, which helps to cushion it and regulate its temperature. It has several distinct regions, including the cerebral cortex, basal ganglia, and limbic system, each of which performs specific functions such as processing sensory information, controlling movement, and regulating emotions. The brain is also highly energy-intensive, consuming a significant portion of the body's total energy expenditure. Despite its many functions, the human brain is still not fully understood and continues to be studied by scientists in an effort to unlock its secrets.