Ain't never felt this way. Can't get enough so stay with me. It's not like we got big plans. Let's drive around town holding hands. And you need to know. You're the only one, alright alright. And you need to know. That you keep me up all night, all night.
Definition of SYMPATHETIC NERVOUS SYSTEM. : the part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart rate â compare parasympathetic nervous system.See sympathetic nervous system defined for kids.ADVERTISEMENT.efinition of SYMPATHETIC NERVOUS SYSTEM. : the part of the autonomic nervous system that contains chiefly adrenergic fibers and tends to depress secretion, decrease the tone and contractility of smooth muscle, and increase heart rate â compare parasympathetic nervous system. See sympathetic nervous system defined for kids. ADVERTISEMENT.
For example, sympathetic nervous system increases the heart rate, whereas parasympathetic nervous system does the opposite. â¢ Postganglionic fibers of parasympathetic nervous system secrete acetylcholine, while that of sympathetic nervous system secrete adrenaline or noradrenaline at their synapse as neurotransmitters.â¢ Postganglionic sympathetic nerves are adrenergic, whereas postganglionic parasympathetic nerves are cholinergic. Postganglionic fibers of parasympathetic nervous system secrete acetylcholine, while that of sympathetic nervous system secrete adrenaline or noradrenaline at their synapse as neurotransmitters. â¢ Postganglionic sympathetic nerves are adrenergic, whereas postganglionic parasympathetic nerves are cholinergic.