|Progesterone is sometimes known as the ''hormone of pregnancy''. It converts the endometrium to its secretory stage to prepare for implantation, reduces the immune response within the uterus to allow for acceptance of the conceptus, and decreases contractility of the smooth muscle. | |Progesterone is sometimes known as the ''hormone of pregnancy''. It converts the endometrium to its secretory stage to prepare for implantation, reduces the immune response within the uterus to allow for acceptance of the conceptus, and decreases contractility of the smooth muscle. |