Which hormone stimulates more frequent and more powerful contractions of the uterus as birth nears?
A) estrogen
B) relaxin
C) progesterone
D) oxytocin
E) gonadotropin

Question

Quizplus · Accepted Answer

Oxytocin is the hormone responsible for stimulating more frequent and more powerful contractions of the uterus as birth nears. It is released in response to stretching of the uterus and nipple stimulation. Estrogen and progesterone play important roles in pregnancy but do not directly stimulate contractions. Relaxin helps to soften the cervix and ligaments but does not directly stimulate contractions. Gonadotropin refers to a group of hormones that stimulate the gonads (ovaries or testes) and do not play a direct role in uterine contractions during childbirth.

Which Hormone Stimulates More Frequent and More Powerful Contractions of the Uterus