In the absence of thyroid hormone,epinephrine stimulates release of a small amount of fatty acids from adipose cells.In the presence of thyroid hormone (which has no effect by itself),epinephrine causes a much more substantial release of fatty acids from the cells.The effect of thyroid hormone on epinephrine's actions is called
A)Antagonistic
B)Agonistic
C)Permissive
D)Direct
E)Paracrine

Question

Quizplus · Accepted Answer

The effect of thyroid hormone on epinephrine's actions is permissive, meaning that thyroid hormone does not have a direct effect on the release of fatty acids, but it allows epinephrine to exert its full effect. Therefore, choice C is the best answer.

In the Absence of Thyroid Hormone,epinephrine Stimulates Release of a Small