A positive feedback mechanism initiates the rhythmic contractions of labor. Determine the hormones involved in this feedback loop.
A) prostaglandins and oxytocin
B) relaxin and human chorionic gonadotropin (hCG)
C) cortisol and aldosterone
D) estrogens and progesterone

Question

Quizplus · Accepted Answer

Prostaglandins and oxytocin are involved in the positive feedback loop that initiates and maintains labor contractions. Oxytocin stimulates uterine contractions, and prostaglandins enhance these contractions, creating a cycle that intensifies labor.

A Positive Feedback Mechanism Initiates the Rhythmic Contractions of Labor