✅ I. Introduction / Definition: Lactation is the process of milk production and secretion from the mammary glands after childbirth. ✅ “Lactation is the physiological process whereby the female breast produces and excretes milk to nourish a newborn.” 🔬 II. Physiology of Lactation: 🧠 Involves 3 Hormonal Phases: 🧪 Hormone 📌 Function Estrogen Develops ducts of breast during pregnancy Progesterone Develops lobules and alveoli of mammary gland Prolactin Stimulates milk