Which of the following are not antagonistic hormones?

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Activin and inhibin

Calcitonin and parathormone

Insulin and glucagon

Epinephrine and norepinephrine

answer is D.

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Detailed Solution

Epinephrine and norepinephrine have similar actions. The other three pairs have antagonistic (opposite) effects. Activin stimulates FSH secretion while inhibin inhibits FSH secretion. Calcitonin is hypocalcemic hormone whereas PTH is a hypercalcemic hormone. Insulin is a hypoglycemic hormone while glucagon is hyperglycemic hormone.

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