epinephrine
Sympathetic
The sympathetic and parasympathetic nervous systems are subdivisions of the autonomic nervous system.
The parasympathetic nervous system allows for the relaxation of the GI muscles, which allows excretion. So in other words, constipation is more a product of the sympathetic nervous system, which if stimulated, will divert blood flow from the gut and delay defecation, causing constipation. If the parasympathetic nervous system is blocked or the sympathetic system stimulated, constipation can result.
The parasympathetic nervous system allows the act of micturition. The sympathetic nervous system inhibits it.
The parasympathetic nervous system does not stimulate the fight or flight response.
autonomic The parasympathetic nervous system is part of the nervous system.
the parasympathetic nervous system.
The Sympathetic Nervous System and the Parasympathetic Nervous System
The autonomic nervous system is divided into the sympathetic and parasympathetic systems.
Parasympathetic
The parasympathetic and sympathetic divisions of the autonomic nervous system or antagonistic. They have opposing effects.
parasympathetic nervous system