Doula

Answer: C - Relaxin is a hormone that loosens ligaments and connective tissue. In labor, this helps the uterus to contract effectively (without restraint) and the pelvis to open wider. While the placenta does produce hormones to support pregnancy, it doesn't need relaxin to do so. Oxytocin is the hormone responsible for uterine contractions. Endorphins are the hormone most often associated with pain relief.