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Difference Between Epinephrine and Norepinephrine. Epinephrine vs Norepinephrine Both Epinephrine and Norepinephrine are similar chemical messengers released by adrenal medulla.

Difference Between Epinephrine and Norepinephrine

Both of these messengers belong to the chemical class of catecholamine, which are derived from an amino acid called tyrosine. These adrenomedullary hormones play essential role in stress responses, arterial blood pressure, and fuel metabolism. In terms of their structure, Epinephrine and Norepinephrine are the same except that epinephrine has a methyl group. Focus on Brain Disorders. Neuroanatomy_large. Anatomy_of_human_brain. _lp84n93bN61qfepsg. Google Image Result for. Brain%20anatomy.