when did he discover norephinephrine?
1946
Ulf von Euler
From 1946 
what role does the neurotransmitter norepinephrine have in the cardiac system It increases heart rate and blood pressure what is norepinephrine? It is an organic chemical in the catecholamine family that functions in the brain and body as a hormone and neurotransmitter. what kind of a structure does this organ have? Its structure differs from that of epinephrine only in that epinephrine has a methyl group attached to its nitrogen, whereas the methyl group is replaced by a hydrogen atom in norepinephrine. does it affect our sleep? Can cause sleeplessness does that chemical have any affects on our skin? It activates the afferent sensory neuron does it go through degradation? Yes, in mammals, norepinephrine is rapidly degraded to various metabolites. did anyone discover this? Ulf von Euler who was he? A Swedish physiologist and pharmacologist can you tell me some researches that he has done? His further researches include four other important endogenous active substances, prostaglandin, vesiglandin, piperidine and noradrenaline.
wiki:24487904
Ulf von Euler [SEP] Research
From 1946 on, however, when noradrenaline (abbreviated NA or NAd) was discovered, von Euler devoted most of his research work to this area. He and his group studied thoroughly its distribution and fate in biological tissues and in the nervous system in physiological and pathological conditions, and found that noradrenaline was produced and stored in nerve synaptic terminals in intracellular vesicles, a key discovery which changed dramatically the course of many researches in the field. In 1970 he was distinguished with the Nobel Prize for his work, jointly with Sir Bernard Katz and Julius Axelrod. Since 1953 he was very active in the Nobel Foundation, being a member of the Nobel Committee for Physiology or Medicine and Chairman of the Board since 1965.