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Adrenergic is a descriptive term for cells of the autonomic nervous system that use adrenaline (epinephrine) and noradrenaline (norepinephrine) as chemical neurotransmitters. The sympathetic nervous system is an adrenergic nervous system.[1] Adrenergic may also refer to drugs which act upon the sympathetic nervous system, such as beta-blockers.[2]


  1. Abnormal Psychology, Rosenhan & Seligman, 1984
  2. Dirckx, Dr John H (ed). Stedman's concise medical dictionary for the health professions 4th ed. 2001