According to the leading proposal, what initiates parturition
A)parasympathetic stimulation
B)a negative-feedback loop established between progesterone and oxytocin
C)a drop in oxytocin secretion
D)an increase in uterine responsiveness to oxytocin as a result of an increased concentration of myometrial oxytocin receptors

Question

Quizplus · Accepted Answer

The leading proposal is that an increase in uterine responsiveness to oxytocin, as a result of an increased concentration of myometrial oxytocin receptors, initiates parturition. This is supported by evidence that shows an increase in oxytocin receptor expression and signaling in the myometrium in the final weeks of pregnancy, leading to increased contractility and labor.

According to the Leading Proposal, What Initiates Parturition