sympathetic nervous system - Dictionary definition and pronunciation - Yahoo! Education

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Definition of sympathetic nervous system

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< sympathetic ink

sympathize >

sympathetic nervous system

NOUN:

The part of the autonomic nervous system originating in the thoracic and lumbar regions of the spinal cord that in general inhibits or opposes the physiological effects of the parasympathetic nervous system, as in tending to reduce digestive secretions, speeding up the heart, and contracting blood vessels.

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