Based on their effects, which pair below could be considered antagonistic?
A)prostaglandin F and nitric oxide
B)growth hormone and ecdysone
C)endocrine and exocrine glands
D)hormones and target cells
E)neurosecretory cells and neurotransmitters

Question

Quizplus · Accepted Answer

Prostaglandin F and nitric oxide have opposing effects on smooth muscle contraction. Prostaglandin F stimulates contraction while nitric oxide inhibits it, making them antagonistic.

Based on Their Effects, Which Pair Below Could Be Considered