In order to understand the causes of infertility and the
role that the modern treatment of infertility care plays in the design, it
is useful to observe the natural process - the woman's ovulatory cycle and
sperm production in men - and hormones that exert major roles these
processes.
Asgonadotrofinas are hormones that primarily affect the ovaries and testes.
Regulate the development and secretory functions of these organs and
hormones contribute to the production of sperm in the man and the
development and maturation of eggs (oocytes) in women. Three gonadotropins
are essential for reproduction: follicle-stimulating hormone human (human
follicle stimulating hormone, HFSH), human luteinizing hormone (human
luteinizing hormone, HLH) and human chorionic gonadotrophin (human
chorionic gonadotropin, HCG). FSH and LH are secreted by the pituitary
gland located below the brain (see illustration 1). Its secretion is
controlled by another hormone, gonadotropin-releasing hormone (gonadotropin-releasing
hormoneGnRH) produced by the hypothalamus. HCG is primarily produced
pala placenta after successful implantation, and plays a role in maintaining
pregnancy.
