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

Define three major steps for study of genetic family tree, What are the thr...

What are the three major steps for a good study of a genetic family tree? Step 1: Determine whether the studied phenotypical form has a dominant or the recessive pattern. Step

Define dietary management of cancer patients, Define Dietary Management of ...

Define Dietary Management of Cancer Patients and Feeding Problems Related To Cancer Therapy? We took an overview about the general nutritional requirements of cancer patients.

Impact of technological change on the cost of health service, Impact of Tec...

Impact of Technological Change on the Cost of Health Service Technological developments entail improvement in production/service frontiers either by providing cost benefit adv

Homo sapiens fossilis (cro-magnon man), Hom o sapiens fossilis (CRO-M...

Hom o sapiens fossilis (CRO-MAGNO N MAN) - Fossils found from Cro-Magnon, France by Mac Gregor (1868) Replaced Neanderthal man about 35.000 years ago Sharp nose

Characteristic of ecotone, Characteristic of Ecotone A general charact...

Characteristic of Ecotone A general characteristic of ecotone is that it has sufficiently greater number of species and the diversity of most of the species at times is higher

Explain adverse effects of amprenavir, Explain Adverse effects of Amprenavi...

Explain Adverse effects of Amprenavir  The most common adverse effects have been nausea, vomiting (especially in combination with zidovudine), perioral paresthesias and rash (J

Where is the patient most likely to experience, The most recent blood work ...

The most recent blood work of a patient with a diagnosis of acute myelogenous leukemia (AML) reveals thrombocytopenia. Where is the patient most likely to experience abnormal bleed

From which structures is the nuclear membrane composed, Eukaryotic cells ha...

Eukaryotic cells have nucleus delimited by two juxtaposed membranes that start with the membrane of the endoplasmic reticulum. The nuclear membrane, or karyotheca, represents pores

Plants and animals - biological weathering, Plants and animals The acti...

Plants and animals The activity of living organisms like lichens, fungi, bacteria, blue green algae, bryophytes is also responsible for weathering.  It is referred to as biolog

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