The divisions of the nervous system that have antagonistic, or opposing, actions are the sympathetic nervous system and the parasympathetic nervous system.
Our nervous system has two integral parts: the sympathetic nervous system and the parasympathetic nervous system.
Both these systems balance each other through their functions.
our body's flight response is under the control of the sympathetic nervous system (SNS) while the parasympathetic nervous system i.e. PNS helps to calm the body down as a result of danger, threat, or warning.
During relaxing hours, PNS keeps our body system calm and composed.
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