How can the menstrual cycle be described, Biology

Assignment Help:

Q. Including major events and hormonal changes how can the menstrual cycle be described?

One can imagine a cycle like an analog clock at which at 0 o'clock is the beginning and the end of the menstrual cycle and that 6 o'clock corresponds to the 14h day of the cycle and at 0 o'clock the menses and so the menstrual cycle begins and FSH blood level begins to rise.

Around 2 o'clock the maturing follicles under FSH action are already secreting estrogen and the endometrium is thickening and around 3 o'clock estrogen is intensely stimulating the rise of LH blood level. At 6 o'clock (the 14th day) LH is at its maximum concentration and FSH also at high levels to promote ovulation, LH then stimulates the formation of the corpus luteum and around 7 o'clock the corpus luteum is already secreting a great amount of progesterone and estrogen and the endometrium thickens even more, concomitant lowering of FSH and LH occurs with the increasing of the ovarian hormones.

Around 11 o'clock the reduced FSH and LH levels make the corpus luteum turn into the corpus albicans the production of progesterone and estrogen ceases and the endometrium regresses and At 0 o'clock again (28th day) the endometrium desquamates and a new menstrual cycle begins.


Related Discussions:- How can the menstrual cycle be described

Describe the classification of arthropoda, Describe the Classification of A...

Describe the Classification of Arthropoda? Most arthropods also go through a growth process called metamorphosis, whereby they change their bodies into an entirely different fo

Explain the dna hybridisation, Explain the DNA Hybridisation? This tech...

Explain the DNA Hybridisation? This technique is used to study or compare the genetic affinity between two organism. In such studies the deoxyribonucleic acid (DNA) of both org

Centrosome, structure of centrosome and work

structure of centrosome and work

Ribosome in the translation of one mrna molecule, Q. How many of the same p...

Q. How many of the same proteins are made at the same time by each ribosome in the translation of one mRNA molecule? How does successive protein production occur in translation?

Difference between reproduction system of man and rabbit, Difference betwee...

Difference between Reproduction System of man and rabbit -   S.No.   Man   Rabbit   1.   2.   3.

Explain the universality of the genetic code, How does the universality of ...

How does the universality of the genetic code make the recombinant DNA technology possible? The universality of the genetic code refers to the fact that all living beings have

Origin and evolution of metazoa, Origin and Evolution of Metazoa Most ...

Origin and Evolution of Metazoa Most of the early metazoans were soft bodied and so their fossils are rare. The extremely fragmented fossil record does not shed any specific l

What are the hyphae and the mycelium of pluricellular fungi, What are the h...

What are the hyphae and the mycelium of pluricellular fungi? The major structures of pluricellular fungi are the hyphae (threadlike filaments made of contiguous uni or multinuc

What is hydrogenqted fat, Q. What is Hydrogenqted Fat? All vanaspati pr...

Q. What is Hydrogenqted Fat? All vanaspati preparations are the result of hydrogenation of oils, where unsaturated fat is converted to saturated fat for its favour and long she

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