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The postsynaptic cell is more likely to reach

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the postsynaptic cell is more likely to reach threshold an inhibitory postsynaptic potential is called an IPSP it results from the opening of ligand-gated Cl- or K+ channels it causes the postsynaptic cell to become more negative or hyperpolarized the postsynaptic cell is less likely to reach threshold
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Regeneration & Repair Plasticity maintained throughout life sprouting of new dendrites synthesis of new proteins changes in synaptic contacts with other neurons Limited ability for regeneration (repair) PNS can repair damaged dendrites or axons CNS no repairs are possible
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Multiple Sclerosis (MS) Autoimmune disorder causing destruction of myelin sheaths in CNS sheaths becomes scars or plaques 1/2 million people in the United States appears between ages 20 and 40 females twice as often as males Symptoms include muscular weakness, abnormal sensations or double vision Remissions & relapses result in progressive, cumulative loss of function
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The second most common neurological disorder affects 1% of population Characterized by short, recurrent attacks initiated by electrical discharges in the brain lights, noise, or smells may be sensed skeletal muscles may contract involuntarily loss of consciousness Epilepsy has many causes, including; brain damage at birth, metabolic disturbances, infections, toxins, vascular disturbances, head injuries, and tumors Epilepsy
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