In early pregnancy, what hormone stimulates growth of the corpus luteum? human chorionic gonadotropin follicle-stimulating hormone human chorionic somatomammotropin adrenocorticotropic hormone progesterone

Human chorionic gonadotropin (hCG) is secrete by the embryo early in pregnancy to keep the corpus luteum for dying. This positive feedback will maintain the corpus luteum, which secretes Progesterone and Estrogens throughout pregnancy, in order to keep the endometrium well to nourish the embryo/fetus.