Compléter Sympathetic ANSVersion en ligne unit2 par Kirsten Storemski 1 nicotinic preganglionic norepinephrine sympathetic internal ACH physiological sympathetic alpha postganglionic 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 .
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