Which one of the following hormone pairs is antagonistic, in that they have opposing effects?
A) estrogen, progesterone
B) epinephrine, norepinephrine
C) glucagon, insulin
D) oxytocin, prolactin
E) thyroxine (T₄) and triiodothyronine (T₃)

Question

Quizplus · Accepted Answer

Glucagon and insulin have opposing effects on blood glucose levels. Glucagon raises blood glucose levels by promoting the breakdown of glycogen in the liver, while insulin lowers blood glucose levels by promoting the storage of glucose as glycogen in the liver and muscle cells. The other hormone pairs listed do not have opposing effects.

Which One of the Following Hormone Pairs Is Antagonistic, in That