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 : Implications of Hawthorne experiments

    Implications of Hawthorne experiments Hawthorne experiments have opened a new chapter in the management by suggesting management through good human relations. A huma

  • Q : Similar species with reproduction

    Can two normal individuals of similar species with sexual reproduction contain similar genomes and similar karyotypes? How the human karyotype is generally symbolized?

  • Q : Actions of antibodies against bacteria

    Differentiate the actions of antibodies against bacteria and virus?

  • Q : Results of shifting chemical

    What are the results of shifting the chemical equilibrium of the formation of bicarbonate from carbon-dioxide and water towards the rise of product (or bicarbonate) formation?

  • Q : Cell division phase of the embryonic

    What is cell division all through the primary phase of the embryonic development termed? How is this phase characterized?

  • Q : Coordination - Meaning and definition

    Meaning and definition Coordination as a function of the management refers to the tasks of integrating the activity of separates units of an organization to accompli

  • Q : How is plant tissues categorized

    How is plant tissues categorized according to their functions?

  • Q : Posters Communication - Organization

    They fall under visual communication, they are useful for the following purposes: I. In factories where most of the workers are illiterate, posters are used to educate them in performing their job efficiently. With the help of posters, they are taught how to operate machines and how to

  • Q : Explanation of deplasmolysis of plant

    Give a brief explanation of deplasmolysis of the plant cells.

  • Q : Description of secondary roots Give a

    Give a brief description of the term secondary roots? In origin how secondary roots discriminate from shoots?

©TutorsGlobe All rights reserved 2022-2023.