Physiology The breast is a hormonally responsive organ. Which statement about progesterone is NOT true? A Progesterone is produced in the ovary B Progesterone stimulates growth of the lobules and the acini C Progesterone causes an increase in interstitial fluid in the breast D Progesterone promotes growth of both the stroma and the duct system of the breast 💡 Explanation The breast is a hormonally responsive organ. Which statement about progesterone is NOT true? ✓ Correct Answer: D. Progesterone promotes growth of both the stroma and the duct system of the breast