<prompt> Major neurotransmitter released at end organ effectors of the sympathetic division of the autonomic nervous system isAdrenalineNoradrenalineDopamineAcetylcholine  <response>: Neurotransmitter secreted it in organ effectors of sympathetic system is mostly nor-adrenaline except in sweat glands and haur follicle, where it Is acettacetylch where as it is acetylcholine at parasympathetic system Ref-KDT 6e p116 