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.
What Is the Sympathetic Nervous System? While your brain, which is a vital part of the central nervous system, has the capability to control your conscious actions like walking, thinking and talking, your body also has an autonomic nervous system, which regulates your bodily functions, like the beating of your heart, your breathing, the way you digest your food, your sweating patterns, etc.