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Which hormone uses a second messenger mechanism? testosterone estrogen norepinephrine cortisol none of these choices?

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Norepinephrine uses the Second Messenger System, which means, cells signal to each other what molecules have been released that will trigger a physiological reaction.


This phenomenon is activated after the ligand (ion or molecule) is bonded to its receptor (protein molecule), creating a variation that causes a chain-reaction, that will finally activate the Second Messenger. The latter will activate intercellular molecules that will be able to control the cell’s activity.

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