This medical illustration explains how maternal hormones regulate milk production and ejection during breastfeeding. It shows the brain components including the hypothalamus and pituitary gland releasing prolactin and oxytocin, respectively. Prolactin stimulates milk secretion in the alveoli of the mammary glands, while oxytocin triggers contraction of myoepithelial cells to eject milk through ducts and nipples. The diagram emphasizes the feedback loop initiated by infant sucking, which signals hormone release to support lactation.