A Lack of Oxytocin Secretion from the Posterior Pituitary Gland

Question

A lack of oxytocin secretion from the posterior pituitary gland during birth
A)will result in no fetal muscular movements.
B)will reduce uterine wall contractions.
C)causes an increase in progesterone secretion from the placenta.
D)causes an increase in estrogen secretion from the placenta.

Accepted Answer

Oxytocin is responsible for stimulating uterine contractions during labor. A lack of oxytocin secretion from the posterior pituitary gland during birth will reduce uterine wall contractions. This can lead to prolonged labor and may require medical intervention. The fetal muscular movements are mainly driven by the fetal nervous system and not by oxytocin. Additionally, oxytocin has no direct effect on progesterone or estrogen secretion from the placenta.