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The ____________________ system of the ANS innervates most of the ____________________ organs . The sympathetic arises from vertebrae T1 - L2 . The chemical neurotransmitter between the ____________________ and ____________________ neuron is ____________________ . The receptors are ____________________ . The neurotransmitter released by the postganglionic neuron on the organ is ____________________ . These receptors are ____________________ or beta . The ____________________ action of the ____________________ system is to prepare the body for fight or flight .