sympathetic nervous system

Definitions

General Science

  • noun one of two complementary parts of the nervous system that affects involuntary functions.

Medical

  • noun part of the autonomic nervous system, which leaves the spinal cord from the thoracic and lumbar regions to go to various important organs such as the heart, the lungs and the sweat glands, and which prepares the body for emergencies and vigorous muscular activity.
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