ch 3 notes II - Hemispheres Meninges-Protect brain from...

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Hemispheres
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Meninges --Protect brain from shock (provide buoyancy) --supply blood and nutrients to brain --produce and absorb Cerebrospinal Fluid (CSF)
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Ventricles Cavities in the brain filled with circulating cerebrospinal fluid (also goes through spinal cord)
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Hydrocephalus Flow of CSF blocked, builds up in ventricles. Ventricles expand brain tissue is compressed. (A shunt is surgically implanted to open blockage)
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Stroke Blood clot blocks flow Artery ruptures elsewhere (hemorrhage) Starves brain tissue, which is damaged or dies
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The “Forebrain” or Cerebral Cortex Includes: -Four lobes of the brain -Limbic system (including the amygdala and hippocampus) -Basal ganglia
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4 Lobes
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Based on skull bones Central Sulcus Precentral gyrus Postcentral Gyrus Lateral Fissure
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Frontal lobe Motor cortex Deliberate movement of muscles Rest of frontal lobes planning movements and thinking ahead, reasoning, producing speech, monitoring environment, inhibition of emotions or actions
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