Parenteral delivery of testosterone enanthate involves an intramuscular injection. It replaces the physiological actions of natural testosterone, including the development of the male reproductive system (testes and prostate) and the secondary male sexual traits (increased bone and muscle mass, and growth of facial hair).
The trophoblast cells of the placenta secrete human chorionic gonadotropin (hCG) into the bloodstream. The transmembrane receptor used by this hormone to attach to theca and granulose cells of the ovaries is likewise used by the luteinizing hormone (LH/CG receptor).
