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

Question

Quizplus · Accepted Answer

Prostaglandins and oxytocin are the hormones involved in the positive feedback mechanism that initiates the rhythmic contractions of labor. Prostaglandins work to soften and thin the cervix, while oxytocin stimulates the uterine muscle to contract and push the baby through the birth canal. As the baby descends further into the pelvis, more pressure is placed on the cervix, which further stimulates the release of oxytocin and prostaglandins, creating a positive feedback loop that ultimately leads to the delivery of the baby.

A Positive Feedback Mechanism Initiates the Rhythmic Contractions of Labor