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Q: . Local anesthetics block voltage-gated Na+ channels. General anesthetics are thought to activate chemically gated Cl- channels, thereby rendering the nervous system quiescent while surgery is
performed. What specific process do anesthetics impair, and how does this interfere with nerve impulse transmission?
A: They block neurotransmitters in the brain, thus blocking impulses out, i.e. muscle movement and impulses in, sensation of pain. Thus you are asleep, paralyzed and don't feel a thing.
Expert answered|patmarone|Points 2541|
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Asked 12/6/2011 10:15:19 AM
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