This system controls autonomic functions. These are what are called the "fight or flight" response and the "rest and repose" responses.
sympathetic nervous system.
The sympathetic and parasympathetic nervous systems are subdivisions of the autonomic nervous system.
sympathetic division of the autonomic nervous system
epinephrine and norepinephrine stimulate the sympathetic nervous system
sympathetic nervous system.
epinephrine and norepinephrine stimulate the sympathetic nervous system
epinephrine and norepinephrine stimulate the sympathetic nervous system
Vasoconstriction is primarily controlled by the sympathetic nervous system.
The Sympathetic Nervous System and the Parasympathetic Nervous System
The autonomic nervous system is divided into the sympathetic and parasympathetic systems.
The effects of the sympathetic nervous system are essential opposite those of the parasympathetic nervous system. The sympathetic nervous system accelerates functions such as heart rate and breathing and the parasympathetic slows these bodily processes down. The sympathetic also inhibits digestion, whereas the parasympathetic stimulates digestion. The sympathetic nervous system produces "fight-or-flight" reactions, while the parasympathetic functions under relaxed conditions.
sympathetic nervous system