Determine the series of hormonal events that leads to birth. 1. Oxytocin stimulates the placenta to secrete prostaglandins.
2) Fetal cortisol stimulates the placenta to secrete estrogen.
3) Prostaglandins dilate the cervix, and with oxytocin, increase the strength of uterine contractions.
4) The high estrogen level stimulates the uterus to form oxytocin receptors.
A) 1, 4, 2, 3
B) 2, 4, 3, 1
C) 1, 3, 2, 4
D) 2, 4, 1, 3

Question

Quizplus · Accepted Answer

Fetal cortisol stimulates the placenta to secrete estrogen (2), which then stimulates the uterus to form oxytocin receptors (4). Oxytocin stimulates the placenta to secrete prostaglandins (1), which dilate the cervix and, along with oxytocin, increase the strength of uterine contractions (3).

Determine the Series of Hormonal Events That Leads to Birth