--%>
Assignment Help - homework help

Hypophysis-ovaries endocrine axis

Does hypophysis-ovaries endocrine axis work in the same way during the pregnancy as in the non-pregnant women? In case the pregnancy does not occur, how does another menstrual cycle start?

E

Expert

Verified

Functioning of hypophysis is changed during the process of pregnancy. As levels of progesterone and estrogen stays elevated during the gestational period, the production of GnRH or gonadotropin-releasing hormone from the hypothalamus is reduced. Lack of GnRH therefore stops the liberation of LH and FSH from hypophysis and a new menstrual cycle does not occur.

In case the pregnancy does not takes place the lowering of progesterone and estrogen levels triggers the generation of GnRH by hypothalamus. This hormone then fastens the adenohypophyseal liberation of the FHS and LH which in their turn triggers the maturation of the follicles and the beginning of the new menstrual cycle.

   Related Questions in Biology

  • Q : Help What are 4 main difficulties that

    What are 4 main difficulties that had to be solved with this evolution? How were they solved?

    		•
  • Q : Example of Knowledge Management -

    Picasso had a collection of masterpieces in his home. They were hung slightly crooked, and visitors couldn't resist the temptation to straighten them. But Picasso felt that when a painting was straight, the observer focused on the frame around it. When the frame was crooked, the beauty of the ima

    		•
  • Q : Throughput Factor-Group

    This refer to all aspects of the group processes and dynamics that result in task performance and member satisfaction. Some of these are the norms developed on groups, group cohesiveness, decision making processes used by the group and the extent of task and maintenance activities performed by th

    		•
  • Q : Is pepsin is a gastric enzyme As pepsin

    As pepsin is a gastric enzyme does it, has basic or acid optimum pH? What occur to pepsin if it passes to the duodenum?

    		•
  • Q : Define Contract Negotiations Contract

    Contract Negotiations: The contract negotiation is any discussion, either in person or via electronic means, which has as its main goal to come to a written agreement regarding a business matter. Such a contract can be for almost anything, though the

    		•
  • Q : Describe the term twins Describe the

    Describe the term twins?  Genetically Explain the two types of twins which can be generated?

    		•
  • Q : Endocrine function of placenta Explain

    Explain the endocrine function of placenta?

    		•
  • Q : T cell is stated to be class I

    What does the given sentence signify? T cell is stated to be class I restricted. Answer: This means that they can identify the antigen, that is, related with class I MHC molecules.   

    		•
  • Q : Function Describe briefly th function

    Describe briefly th function of centrioles in cell division

    		•
  • Q : Explain plant coleoptile Explain the

    Explain the plant coleoptile? Why removal of coleoptile extremity does does not allow the growth of the plant?

    		•