Brand Names Systems Reproductive and Endocrine system Category Hormone. These hormones are normally secreted by the placenta, which maintains the Corpus Luteum of pregnacy.
Concentrations vary with the phase of the menstrual cycle.
Their production is regulated by a negative feedback effect. It is a hormone also normally produced by the placenta in pregnancy. It helps to maintain pregnancy. Chorionic gonadotropin has different effects in females and males. In females, chorionic gonadotropin is used to induce conception .