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100109 - October1,2009 3SECTIONSOFTHEBRAIN Hindbrain...

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October 1, 2009 3 SECTIONS OF THE BRAIN Hindbrain Midbrain Forebrain HINDBRAIN Where the spinal cord joins the brain. The hindbrain controls vital functions Oldest part of the brain Made   of -   Reticular   activating   system -   cerebellum -   Pons - medulla oblongata RETICULAR ACTIVATING SYSTEM (R.A.S.) Main   function   is   to   maintain   consciousness - involved with arousal and keeping the brain awake Located at the center of the brain stem between the Medulla Oblongata and the  Mesencephalon The R.A.S. also screens incoming information, filtering out irrelevant information
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Fibers going through this part of the brain control respiration and cardiac rhythms Damage   to   the   R.A.S.   can   cause   coma - the person is still alive, but the brain is functioning at its lowest stage of  alertness (a severe injury to the head, seizures, infections involving the brain,  brain damage caused by a lack of oxygen for too long, an overdose of medicine  or other drugs, a stroke) Imbalance in the R.A.S. linked to ADHD and Alzheimer’s disease CEREBELLUM Coordinate body movements, control balance and posture
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