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sympathetic |
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sympathetic 1. Anatomy physiol of or relating to the division of the autonomic nervous system that acts in opposition to the parasympathetic system accelerating the heartbeat, dilating the bronchi, inhibiting the smooth muscles of the digestive tract, etc. 2. relating to vibrations occurring as a result of similar vibrations in a neighbouring body How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Direct electrical stimulation of sympathetic trunks in experimental animals activates preganglionic and postganglionic neurons and causes vasoconstriction. In this minimally invasive procedure, the surgeon severs the sympathetic trunk inside the thorax (chest) between the second and fourth sympathetic ganglions. |
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