The Neural and Hormonal Bases of the Reproductive Cycle of the Rat

摘要: The reproductive cycle of the female mammal is one most important biological rhythms. Through coordination vaginal, ovarian, pituitary, neuroendocrine and behavioral rhythms, reproduction propagation species made possible. This cycle, which in large measure a manifestation regulation pituitary gonadotropin (GTH) secretion by central nervous’system (CNS), has several distinctive characteristics: 1) Although related to daily light period much longer, ranging from four or five days rat (which will be principal considered this discussion), monthly human. 2) clearly neural rhythm, normal expression that rhythm totally dependent on feedback action gonadal hormones. 3) sexually dimorphic, ontogenic studies have demonstrated it determined hormone environment at Crotocal Period development.