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Central Nervous System (Drugs on brain (GHB & rohpnol (relaxing…
Central Nervous System
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layers of the meninges
dura mater
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
strong enough stimulation or nerve impulse causes Na+ gates to open, then Na+ rush into cell causing depolarization
if a strong enough depolarization occurs threshold potential is reached and impulse is sent down axon
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K+ rush out of neuron after Na++ rush in, which causes a repolarization of the membrane back into resting potential
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Drugs on brain
GHB & rohpnol
relaxing effects, muscle growth, seizures, loss of consciousness, coma, or death
cocaine
increased energy, decreased appetite& mental alertness in the user, nausea, respiratory failures, seizures
heroine
"rush" of pleasure followed by several hours of drowsiness, nausea, vomiting, severe itching
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anabolic steroids
increase risk of heart attacks strokes and liver problems, hair loss and acne
dissociative drugs
near- death experience, feel disconnected from reality and out of control
hallucinogens
hallucinations, dialated pupils, higher body temperature, increase heart rate
MDMA
chills, muscle cramping, involuntary teeth clenching, panic attacks
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marijuana
peaceful or euphoric sensation in user, sleepy or depressed, slow reaction, time
methamphetamine
mental alertness, anxiety, paranoia, delusions
nicotine
intense craving, inability, sleep disturbance