Explain working of hypophysis- ovaries endocrine axis, Biology

Assignment Help:

Q. Does the hypophysis- ovaries endocrine axis work in the same way during pregnancy as in non-pregnant women? If pregnancy does not occur how does another menstrual cycle begin?

The functioning of the hypophysis is altered during pregnancy since progesterone and estrogen levels remain elevated during the gestational period the production of GnRH (gonadotropin-releasing hormone) from the hypothalamus is inhibited. The lack of GnRH thus inhibits the secretion of LH and FSH from the hypophysis and a new menstrual cycle does not begin.

If pregnancy does not occur the lowering of progesterone and estrogen levels stimulates the production of GnRH by the hypothalamus. This hormone then hastens the adenohypophyseal secretion of LH and FHS that in their turn stimulate the maturation of follicles and the beginning of a new menstrual cycle.


Related Discussions:- Explain working of hypophysis- ovaries endocrine axis

Acute myocardial infarction, Acute Myocardial Infarction :  Patients with ...

Acute Myocardial Infarction :  Patients with acute non-Q myocardial infarction may need urgent intervention as indicated for cases of unstable angina.

What is an evolutionary tree, What is an evolutionary tree? Is there a prec...

What is an evolutionary tree? Is there a precise evolutionary tree known by science that explains the emergence and origin of every type of living being? Evolutionary tree is t

What are the glucagon receptors in the plasma membranes, Which of the follo...

Which of the following serves as an effector, or as part of an effector, that functions in a negative feedback system? A. Glucagon Receptors in the plasma membranes of alpha-is

Determine balanced diet for celiac disease, Determine Balanced Diet For Cel...

Determine Balanced Diet For Celiac Disease? Energy: initially the children are seen to be malnourished, thus 100-120 Kcal/kg body weight/day with gradual increase to 150 Kcal

Investigation of aortic regurgitation by echocardiogram, Q. Investigation o...

Q. Investigation of aortic regurgitation by Echocardiogram? Echocardiography is done to confirm the diagnosis of aortic regurgitation, evaluate the cause of AR and assess the a

What are some of the possible treatments, My friend was injured several yea...

My friend was injured several years ago in a car accident and she was diagnosed with a herniated disc. Can you please explain using the correct anatomical terminology what herniati

Explain the principle of alkaline copper reduction method, Explain the Prin...

Explain the Principle of alkaline copper reduction method? All sugars which contain a free aldehyde group undergo enolization when placed in hot alkaline solution. This propert

Active instruments-coronal disassembly devices, Active instruments - Do...

Active instruments - Do groove occlusally or buccally until reach tooth structure - Apply this instrument then screw to break the bond between tooth structure and crown GC

Culture conditions, Culture Conditions The culture vessels placed in s...

Culture Conditions The culture vessels placed in suitable trays or racks, are stored on the shelves in a hygienically maintained culture room, under controlled conditions of l

Transcription and processing of prokaryotic rrna, In E.  coli  there  are  ...

In E.  coli  there  are  seven  rRNA  transcription  units  scattered  by  the genome,  each of that contains one copy of every of the 16S, 23S  and 5S rRNA genes and one to four c

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd