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The Brain

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Brain functions and parts

The Brain Outline Neuro-imaging techniques CT (Computed Tomography) scan which takes x-ray photos to reveal brain damage PET (positron emission tomography) scan which shows brain activity by showing the amount of sugar glucose each section of the brain uses. MRI (magnetic resonance imaging) scans which exploits the fact that our brains spin like tops. Head is put into a strong magnetic field which results in a detailed picture of the brains soft tissue Lower Level Brain Structures Exceptions to the rule that ratio of brain weight to body weight foreshadows intelligence: mice, marmosets (humans brain = 1/45) In primitive vertebrate animals (backboned) such as sharks the brain?s main function is breathing, resting, feeding

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