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Central Nervous System (Drugs that affect the brain (alcohol (loss of…
Central Nervous System
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layers of the meninges
dura mater
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dense, irregular CT with many blood vessels and nerves
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pia mater
innermost, nearly transparent layer: has many nerves and blood vessels
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action potential
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if a strong enough depolarization occurs threshold potential is reached and impulse is sent down axon
K+ rush out of neuron after Na+ rush in, which causes a repolarization of the membrane back into resting potential
strong enough stimulation or nerve impulse causes Na+ gates to open, then Na+ rush into cell causing depolarization
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