Final answer:
Oxytocin is the hormone that triggers labor contractions, aiding in the birth process.
Explanation:
Oxytocin is the hormone primarily responsible for stimulating contractions during labor. It acts on the uterus, promoting uterine contractions that facilitate childbirth. During pregnancy, oxytocin receptors in the uterus increase in sensitivity towards the end of gestation, leading to intensified contractions as childbirth nears.
Learn more about oxytocin here:
https://brainly.com/question/44397910
