the
__________ theory of aging suggests that the elderly who are most
successful while aging are those who maintain the interests and
activities they had during middle age.
Progesterone is sometimes called the “hormone of pregnancy” and has many roles relating to fetal development. It converts the endometrium to its secretory stage to prepare the uterus for implantation. At the same time, it affects the vaginal epithelium and cervical mucus, making them thick and impenetrable to sperm.
