Which statement about adrenomedullary hormones is incorrect?
A)Epinephrine accounts for 80% of adrenomedullary catecholamine output.
B)Epinephrine and norepinephrine are stored within chromaffin granules in the adrenomedullary cells.
C)Epinephrine and norepinephrine have about equal affinities for all the adrenergic receptor types.
D)Epinephrine is at least 10 times more potent than norepinephrine at beta 2 receptors.
E)Epinephrine exerts metabolic effects, whereas norepinephrine has limited action in this regard.

Question

Quizplus · Accepted Answer

Epinephrine and norepinephrine do not have equal affinities for all adrenergic receptor types; epinephrine has a higher affinity for beta receptors, especially beta 2 receptors, compared to norepinephrine.

Which Statement About Adrenomedullary Hormones Is Incorrect