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Menstrual cycle (Phatophysiology (The menstrual cycle is initiated by the…
Menstrual cycle
Phatophysiology
The menstrual cycle is initiated by the luteinizing hormone-releasing hormone, which is released mainly by the hypothalamus.
With puberty, the hypothalamus becomes less sensitive to the estrogen feedback that results in the release of the gonadotropin-releasing hormone or GnRH.
From the hypothalamus, the GnRH travels toward the pituitary gland to signal the release of the follicle-stimulating hormone and the luteinizing hormone.
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The LH is responsible for the ovulation and the thickening of the uterine lining during menstruation.
FSH then activates one primordial follicle from the ovaries to grow and mature and When the follicle reaches full maturity, it is now called the Graafian follicle.
The pituitary gland releases LH, then the prostaglandins that are released ruptures the Graafian follicle.
Ovulation takes place, and the ovum is swept into the fallopian tube.
The LH acts upon the follicle cells of the ovary and in turn, it produces a yellow fluid that is called lutein.
Charecteristics
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The average interval in between cycles is 28 days. Cycles that range from 23-35 days is also normal.
The average duration of menstrual flow is 2-7 days, but a range of 1-9 days is not unusual.
The average amount of menstrual flow is 30-80 mL.and
the normal color of menstrual flow is dark red, which is a combination of blood, mucus, and endometrial cells.
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Defination
is the female reproductive cycle that is characterized by the bleeding of the uterus as a response to the system of hormonal changes.
During the menstrual cycle, the ovum reaches its maturity, and a new uterine bed is made ready for the implantation of the fertilized ova.