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Ganglionic blockade

Ganglionic blockade – a way of regional switching off of a sympathetic innervation by means of administration of alcohol, novocaine or some other substances to the area sympathetic ганглиев; it is applied to treatment and diagnosis of diseases of a sympathetic nervous system.

 
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The weight of a human brain makes about 2% of all body weight, however it consumes about 20% of the oxygen coming to blood. This fact does a human brain extremely susceptible to the damages caused by shortage of oxygen.