Home >>

Menstrual Cycle in Women
Published By ritsharma on 2013-04-06 116 Views

Menstrual Cycle is the cyclic reproductive cycle that occurs in women periodically at regular interval of 28 to 29 days. In the middle of each menstrual cycle one ovum is released after rupturing of Graafian follicle. Menstrual cycle begins in female after attaining puberty and is called menarche. It ceases around 50 years of age and is known as menopause. Menstrual cycle is common in the females of all placental primates. During menstruation significant changes occur in the uterus or womb. Uterus in women is composed of three layers of tissue that are mainly outer perimetrium, middle myometrium and inner glandular endometrium. It is endometrium that undergoes cyclic changes during the menstrual cycle while myometrium exhibits vigorous contraction during the delivery of the baby.

Menstrual cycle has been broadly classified into 3 phases that are mainly Menstrual phase, Follicular phase and Luteal Phase. During Menstrual phase menstrual flow occurs. It lasts for 3 to 5 days. Menstrual flow is due to the breakdown of endometrial lining and its blood vessels that comes out through vagina in the form of liquid. Always remember that menstrual cycle occurs only when the released ovum is not fertilised. Lack of menstrual cycle is an indicator of pregnancy. But sometimes lack of menstrual cycle can also occur due to poor health and diseases.

Menstrual phase is followed by Follicular phase during which primary follicle matures into Graafian follicle due to increase in the secretion of pituitary and ovarian hormones. In this phase endometrium regenerates through proliferation. During the middle of menstrual cycle i.e., around 14th day the secretion of LH hormone increase by manifold called LH Surge and induces the rupturing of Graafian follicle to release ovum. This process is known as ovulation.

After ovulation the remnants of Graafian follicle transforms into Corpus Luteum during the Luteal Phase which secretes pregnancy hormone “Progesterone”. Progesterone maintains endometrium for the implantation of the fertilised ovum. When ovum is not fertilised, corpus luteum disintegrates causing breakdown of endometrium initiating new menstrual cycle. This cyclic reproductive process is called Menstruation.

Must Read:

How to glow your face with curd?

Why all Copulations do not lead to Pregnancy?

How to get rid of gas problems in stomach?

Reference: All facts in this article have been inspired from Class 12 NCERT Biology Book

Post Comment Comments (0) Report This

More Articles Specially Recommended for You:

100 Years Of Indian C...

Today movies have become integral part of our life. And we cannot isolate it from ourselves. Students of today’s generation can afford to

Written By : ritsharma
India : The Winner Of U19 Cricket World Cup 2012

It was April 2, 2011 when senior Indian team lifted cricket world cup after 28 years. But what happened to the Indian team afte

Written By : ritsharma
Neil Armstrong : A True Hero

There was a time when people used to pray moon as god. They still do it but some of the myths linked to moon has been shattered now. Before 21 J

Written By : ritsharma
The Wrong News : First Edition

1) Five donkeys are selected in Animal Idol, they assured us to win trophy for their community 2) Excess watching of televis

Written By : ritsharma
Are Aliens Present On Mars ?

It has been more than a week now since the landing of Rover ‘Curiosity’ on Mars. And it has already started sending

Written By : ritsharma
Muscle Cars Still Reign Supreme

During the 1950s and 1960s the big motor companies were in the middle of a car revolution. The nation was turned upside down with people buying musc

Written By :nikmahajan
Lost Planet 2 Playstation 3 (PS3) Version Confirmed

After lots of speculations, Lost Planet 2 Playstation 3 version is finally confirmed. There is no reason left now to deny Lost Planet 2 for PS3 as

Written By :nikmahajan
Lays Chips HARAAM: Propaganda or Truth?

Some days back I received on SMS and an Email saying that, Lays Chips (Masala Flavor) is HARAAM. On the back of the Lays chips “E631 Fat”

Written By :ubpl
VolksWagen Polo - The Same But Different

Despite the facts that the new VolksWagen Polo resembles the old one and that it is also similar to the VW Golf MkVI it is indeed an all new vehicle.

Written By :nikmahajan


LogIn or SignUp! now to post your comments on this article.