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The human nervous system is a highly complex network that coordinates and regulates bodily functions, behaviors, and responses to external and internal stimuli. At the core of this system lies the brain, spinal cord, and peripheral nerves, which together form the central and peripheral nervous systems. Understanding neuroanatomy is fundamental to mental health because the structure and function of different brain regions directly influence cognition, emotion, behavior, and psychological well-being. The central nervous system (CNS) comprises the brain and spinal cord. The brain is divided into several major parts: the cerebrum, cerebellum, and brainstem. The cerebrum, the largest portion, is responsible for higher-order cognitive functions, sensory perception, voluntary motor activity, and complex behaviors. It is divided into two hemispheres connected by the corpus callosum, which allows communication between the hemispheres. Each hemisphere contains four lobes: frontal, parietal, temporal, and occipital. The frontal lobe governs executive functions such as decision-making, planning, reasoning, and problem-solving. It also controls voluntary motor activity through the primary motor cortex. Damage to the frontal lobe can result in impaired judgment, altered personality, or motor deficits. The parietal lobe processes ____ _________ _________ _________ _______ ______ ______ _____ ___ __________ _______.
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