Phases of Menstrual Cycle

Phases of Menstrual Cycle
Phases of Menstrual Cycle

The menstrual cycle is the series of changes which takes in your body to prepare for pregnancy. About once in the month, the uterus grows a new, thickened lining (Endometrium) which could hold a fertilized egg. When there is no fertilized egg to start the pregnancy, the uterus then sheds its lining which is referred to as menstrual bleeding. It starts with your teens and ends up around the age of 50 years.

The menstrual cycle is measured from the first day 1, up to day 1of your next menstrual bleeding. 28 days is the average cycle length and is normal to have the cycle which is longer or shorter. A teen’s cycle could be long up to 45 days, growing shorter over the years. Between the age group of 25 and 35 years, most women’s cycle is regular which lasts for 21 to 35 days. Around the ages 40 to 42, cycles tend to be shortest and quite regular.

Phases of the Menstrual cycle are:

Menstrual phase
It is a duration from day 1 to day 5. During this duration, the uterus sheds its lining of the soft tissues and the blood vessels which does exist in the body from the vagina in the form of the menstrual fluid. Blood loss of around 10 ml to 80 ml is considered normal. In some cases, you could experience abdominal cramps. These cramps are caused due to the contraction of the uterine and the abdominal muscle to expel the menstrual fluid.

Follicular Phase
It also starts on the first day of the menstruation, but it lasts til the 13th day of the menstrual cycle. The following are the action which occurs during the phase.  The pituitary gland secrets the hormone which stimulates the egg cells in the ovaries to grow. One of the egg cells begins to mature in a sac-like structure called the follicle. It does take around 13days for the egg cell to reach maturity. As the cell matures its follicle secrets the hormone which stimulates the uterus for developing the lining of the blood vessels and the soft tissue know as Endometrium.

Ovulation phase
On the 14th day during the cycle, the pituitary gland secrets the hormone which causes the ovary to release the matured egg cell. The released egg cell is swept into the fallopian tube by the cilia of the fimbriae. Fimbriae are known as the finger-like projections which are located at the end of the fallopian tube close to the ovaries and cilia are the slender hair such projections on ever fimbria.

Luteal phase
It begins on the 15th day and does last till the end of the cycle. The following are the event which occurs during the phase. The cells of the egg are released during the ovulation phase stays on the fallopian tube for at least 24 hours. In case the sperm cell does not impregnate the egg cell within that time it goes for disintegration. The hormone which causes the uterus to retain its Endometrium gets used up by the end of the cycle. Such a condition causes the menstrual phase of the next cycle to begin.


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