Zoology - Human Reproduction Question with Solution | TestHub

The placenta acts as an endocrine tissue and produces several hormones like human chorionic gonadotropin (hCG), human placental lactogen (hPL), estrogens, progestogens, etc. In the later phase of pregnancy, a hormone called relaxin is also secreted by the ovary. Let us remember that hCG, hPL and relaxin are produced in women only during pregnancy. In addition, during pregnancy, the levels of other hormones like estrogens, progestogens, cortisol, prolactin, thyroxine, etc., are increased by several folds in the maternal blood.