Reproductive physiology. Amenorrhea and hyperandrogenism. PCOS. Prolactin. Mechanical factor infertility. Habitual abortions. IVF/ART/Micromanipulation. Endometriosis. Inhibin, activin, premature ovarian failure (POF)-prevention and chimotheraphy treatments. Growth factors (GH, IGF'S) and their binding proteins. Steroidogenesis. Sexology and emotional factor. Functional workup of infertility.