Brain

The human brain is the body's central control center and is responsible for a variety of functions such as movement, emotions, thinking, learning and memory. It consists of about 100 billion neurons that are connected via synapses and form a complex network .

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The brain has four main parts: the brainstem, midbrain, cerebellum, and cerebrum. The brainstem controls functions like breathing and heartbeat and is also responsible for some instinctive responses like the sleep-wake cycle. The midbrain is responsible for coordinating movement and transmitting sensory signals. The cerebellum is responsible for fine-tuning movements. Our cerebrum is the center for higher functions like thinking, emotions and memory.

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Blood supplies the brain with oxygen and nutrients. It is also surrounded by a protective barrier called the blood-brain barrier, which prevents certain substances from entering the brain.

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A variety of diseases and disorders can affect the brain, including traumatic brain injury, stroke damage, degenerative diseases such as Alzheimer's dementia, neurological disorders such as Parkinson's disease and epilepsy, and mental disorders such as depression and anxiety disorders.

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Adequate care and stimulation of the brain through regular physical activity, a balanced and healthy diet, adequate sleep and mental stimulation can help to reduce the risk of neurological or psychiatric diseases and maintain cognitive abilities.