Oxytocin acts on several target tissues, including the uterus, mammary glands, and brain. In the uterus, oxytocin induces contractions during labor by acting on oxytocin receptors on the myometrial cells. In mammary glands, it stimulates milk ejection by contracting myoepithelial cells surrounding the alveoli. In the brain, oxytocin influences social behaviors and emotional responses.
