Who Form 2220 Periods
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Who Form 2220 Periods

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Menstrual cycle and Easter cycle no organism survives forever hence if a species needs to continue to exist its members must reproduce their own kind fertilization is more a chain of events than a single isolated phenomenon and an interruption of any step in the chain can cause fertilization failure rhythmic series of changes in sex organs that occur about every 28 days throughout the reproductive life of a female from puberty to menopause is called menstrual cycle the most prominent feature of the cycle is a monthly flow of blood from the uterus lasting for three to five days this phase is known as menstruation Memphis or menstrual period each time the ovum starts maturing the secondary sex organs commence some growth changes to prepare for the reception of the expected fertilized ovum and the continuation of the anticipated pregnancy ovulation occurs about midway in the menstrual period 13th to 17th day if the ovum is fertilized in this period the proliferated mucosa is converted into placenta if not the hypertrophied mucosa breaks down then the ovary prepares for the maturation and ovulation of the next ovum cycle continues menstruation does is the psychic discharge of blood carrying broken tissue materials through the vagina the men sure blood contains stripped of endometrium mucous leukocytes and unfertilized over a menstrual cycle is taken to begin with the onset of menstrual bleeding and ends just before the next menstruation during the menstrual cycle major changes occur in the uterus vagina breasts and other organs also there is maturation of fall occur in the ovary or ovarian cycle the changes during a menstrual cycle can be divided into three phases proliferative phase the creaturely phase and bleeding phase after menstruation the proliferative phase starts with a growth and proliferation of tissues on the walls of the uterus fallopian tubes and vagina since this phase involves a growing follicle in the ovary it is also known as follicular phase the phase extends for 10 to 12 days by the end of which the ovum is ejected ovulation from the follicle of the ovary it involves changes in the uterus and the ovary at the onset of proliferative phase the mucous membrane of the uterus called the endometrium is the thinnest the uterine changes then begin due to rising concentration of estrogen gradually endometrium glands grow in length it's epithelial cells proliferate the endometrial stroma and blood vessels crew just before ovulation the endometrium becomes 3 to 5 millimeters thick the MA neutral contractions become more powerful and secretion of uterine cervix glands becomes very thin during ovulation to facilitate the entry of spermatozoa during the proliferative phase and immature follicle ripens into a graafian follicle then comes a secretory phase extending for the next twelve to fourteen days here the ruptured follicle changes into a corpus luteum in the ovary and begins to secrete progesterone hormone which causes changes in the secondary sex organs to further prepare for the anticipated pregnancy this phase is also known as progesterone or phase on you chill phase in this phase the changes in uterus involves further thickening of endometrium strand glands are filled with secretion its movements are reduced to keep the uterus non-contracting the arteries of the endometrium become coiled and as glycogen content increases towards the end of this phase the endometrium is thick soft and rich with blood next is a bleeding phase which starts if pregnancy fails to occur here the spiral arteries of the endometrium undergo spasm hence portions of endometrium are slough off and this is accompanied by menstrual bleeding at the end of menstruation the endometrium that remains is only 0.5 to 1 millimeter thick the breathing phase usually extends for three to five days and is followed by the next menstrual cycle apart from estrogen and progesterone the other hormones that regulate a woman's true cycle are gonadotropin-releasing hormone or GnRH follicle stimulating hormone or FSH and luteinizing hormone or LH gnrh synthesized in hypothalamus controls the release of both FSH and LH from the anterior pituitary gland where they are produced as ssh causes the ovarian follicle and it's extra cho and the maturing follicle synthesizes and releases estrogens the East Asian released produces cell division in the endometrium to report damage caused by menstruation the thickness of the tissue increases the NH secretion causes ovulation when the mature egg breaks out of the follicle and moves into the fallopian tube after ovulation the anterior pituitary gland stops producing FSH but continues to release LH and converts the ruptured follicle into a corpus luteum the insurgents and progesterone prepare reproductive organs for pregnancy and stimulate endometrium to become soft moist and thick progesterone increases the volume of muscles and blood vessels in the walls of the uterus stimulates activity of mucous glands in endometrium and causes linux glands to develop in breath in absence of pregnancy corpus luteum degenerates and Eastridge in' and progesterone levels decline menstruation occurs making the end of one menstrual cycle and the beginning of another if pregnancy occurs the membrane around the implanted embryo decreases the hormone chorionic gonadotropin or HCG on the sixth day after ovulation that is twentieth day of cycle it suppresses menstruation and makes corpus luteum the functioning gland if hormones give the endometrium soft moist click and engorged with blood for pregnancy the estrogen and progesterone also inhibit FSH so known your follicles and eggs mature during pregnancy while the appearance of the first menstrual flow in a woman's life between eleven to thirteen years of age is called menarche the permanence disappearance of menstrual cycles in the life of a woman is called menopause which occurs normally between 45 and a little over fifty years of age at menopause the primordial follicles of the ovary no longer respond to pituitary gonadotropins apheon follicles don't develop ovulation does not occur and the possibility of pregnancy after a coitus ceases during menopause ovarian stay here results in.

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