Contractions in uterine smooth muscle during labor are initiated by
A) LH.
B) estrogen.
C) oxytocin.
D) prolactin.

Question

Quizplus · Accepted Answer

Contractions in uterine smooth muscle during labor are initiated by the hormone oxytocin, which is released by the posterior pituitary gland in response to stretching of the cervix and uterus. Oxytocin stimulates the uterine muscles to contract and is responsible for the progress of labor.

Contractions in Uterine Smooth Muscle During Labor Are Initiated by