Generally, young women will get their first period at 12 to 13 years old, as if you refer from wikipedia site, there are young women aged data when girls get first period from several states in the United States. I found lots of articles about the cycle of menstrual period, there is complete one and there are only offered a glimpse only. Here's to increase my knowledge and you about menstruation cycle that I got from some doctor's official website, and of course you have to find another comparison to make your knowledge about the menstrual period is becoming more widespread. This knowledge is useful to explain to your daughters when they will nearing the first menstrual period.
Normal menstrual cycle can be divided into two segments, the ovarian cycle (ovarian) and cycle the uterus (womb). Ovarian cycle is divided into two parts, the cycle of follicular and luteal cycle, whereas the uterine cycle is divided into the proliferation (growth) and the secretion.
Hormonal system that affects the menstrual cycle are:
1. RH-FSH (follicle stimulating hormone releasing hormone) which issued the hypothalamus to stimulate pituitary release of FSH
2. LH-RH (luteinizing hormone releasing hormone) which issued the hypothalamus to stimulate pituitary release of LH
3. PIH (prolactine inhibiting hormone) which inhibits the pituitary to release prolactin
Hormonal system that affects the menstrual cycle are:
1. RH-FSH (follicle stimulating hormone releasing hormone) which issued the hypothalamus to stimulate pituitary release of FSH
2. LH-RH (luteinizing hormone releasing hormone) which issued the hypothalamus to stimulate pituitary release of LH
3. PIH (prolactine inhibiting hormone) which inhibits the pituitary to release prolactin
At each menstrual cycle, FSH is released by the pituitary stimulates the development of follicles in the ovaries (ovarian). In general, only one follicle is stimulated but can progress to become more than 1, and the follicle develops into a follicle de Graaf which makes estrogens.
This estrogen suppress FSH production, so the pituitary secretes hormones that both the LH. The production of LH and FSH hormones under the influence of hypothalamic releasing hormones are distributed to the pituitary.
The distribution of RH is influenced by the feedback mechanism of estrogen on the hypothalamus. The production of gonadotropin hormones (FSH and LH) that will either cause the maturation of the follicle de Graaf that contain estrogen.
Estrogens affect the growth of the endometrium. Under the influence of LH, follicle de Graaf become mature until ovulation occurs. After ovulation occurs, corpus rubrum was established which will become the corpus luteum, under the influence of LH and LTH (luteotrophic hormones, a hormone gonadotropik).
The corpus luteum produces progesterone which can affect the growth of endometrial glands. If there is no fertilization the corpus luteum degenerates and resulted in decreased levels of estrogen and progesterone. Decreased levels of this hormone causes the degeneration, hemorrhage, and the release of the endometrium. This process is called menstruation or menstrual period. If there is fertilization during ovulation, the corpus luteum is maintained.
There are 3 main Every Each Cycle :
1. Menstrual period that lasts for 2-8 days. At that time the endometrium (lining of the uterus) is released causing bleeding and ovarian hormones in the lowest levels.
2. Period of stopping the proliferation of menstrual blood until day-14. Once menstruation ends, began the proliferative phase where there is growth of the decidua functionalist to prepare the uterus for the attachment of the fetus. In this phase, the endometrium grows back. Between days 12 to 14 can occur release of eggs from the ovary (called ovulation)
3. Secretion period. Secretion period is the period after ovulation. The hormone progesterone is released and affect the growth of the endometrium to create the conditions of the uterus ready for implantation (attachment of the fetus to the uterus)
Ovarian Cycle:
1. The follicular phase. In this phase of the reproductive hormones work finalizing the egg from a follicle in mid-cycle and then mature and ready for the process of ovulation (egg expenditure from the ovary). The average time of follicular phase in humans ranges from 10-14 days, and the variability affecting the entire length of the menstrual cycle
2. The luteal phase. Luteal phase is the phase from ovulation to menstruation with an average duration of 14 days
Hormonal cycle and its relationship with ovarian and uterine cycles in the normal menstrual cycle:
1. Beginning of each menstrual cycle, gonadotropin hormone levels (FSH, LH) are at low levels and have declined since the end of the luteal phase of previous cycles
2. FSH hormones from the hypothalamus increased slowly after the end of the corpus luteum and follicular growth begins in the follicular phase. This is the trigger for the growth of the endometrial lining
3. Increased levels of estrogen cause a negative feedback on pituitary FSH expenditures. LH then declined as a result of increased levels of estradiol, but at the end of follicular phase LH hormone levels increase dramatically (biphasic response)
4. At the end of the follicular phase, FSH stimulates hormone receptor (receiver) LH hormone found in granulosa cells, and with stimulation of the LH hormone, progesterone out
5. After stimulation by the hormone estrogen, which causes the pituitary LH triggers ovulation which appears 24-36 hours later. Ovulation is a marker of the phase transition from proliferative to secretory phase, from the follicular to the luteal
6. Estrogen levels decline in the early luteal phase of the phase just before ovulation until mid-, and then increased again due to secretion from the corpus luteum
7. Progesterone increases after ovulation and may be a marker that ovulation has occurred
8. Both hormones estrogen and progesterone increase during the lifetime of the corpus luteum and kemuadian declined to prepare for the next cycle.
This estrogen suppress FSH production, so the pituitary secretes hormones that both the LH. The production of LH and FSH hormones under the influence of hypothalamic releasing hormones are distributed to the pituitary.
The distribution of RH is influenced by the feedback mechanism of estrogen on the hypothalamus. The production of gonadotropin hormones (FSH and LH) that will either cause the maturation of the follicle de Graaf that contain estrogen.
Estrogens affect the growth of the endometrium. Under the influence of LH, follicle de Graaf become mature until ovulation occurs. After ovulation occurs, corpus rubrum was established which will become the corpus luteum, under the influence of LH and LTH (luteotrophic hormones, a hormone gonadotropik).
The corpus luteum produces progesterone which can affect the growth of endometrial glands. If there is no fertilization the corpus luteum degenerates and resulted in decreased levels of estrogen and progesterone. Decreased levels of this hormone causes the degeneration, hemorrhage, and the release of the endometrium. This process is called menstruation or menstrual period. If there is fertilization during ovulation, the corpus luteum is maintained.
There are 3 main Every Each Cycle :
1. Menstrual period that lasts for 2-8 days. At that time the endometrium (lining of the uterus) is released causing bleeding and ovarian hormones in the lowest levels.
2. Period of stopping the proliferation of menstrual blood until day-14. Once menstruation ends, began the proliferative phase where there is growth of the decidua functionalist to prepare the uterus for the attachment of the fetus. In this phase, the endometrium grows back. Between days 12 to 14 can occur release of eggs from the ovary (called ovulation)
3. Secretion period. Secretion period is the period after ovulation. The hormone progesterone is released and affect the growth of the endometrium to create the conditions of the uterus ready for implantation (attachment of the fetus to the uterus)
Ovarian Cycle:
1. The follicular phase. In this phase of the reproductive hormones work finalizing the egg from a follicle in mid-cycle and then mature and ready for the process of ovulation (egg expenditure from the ovary). The average time of follicular phase in humans ranges from 10-14 days, and the variability affecting the entire length of the menstrual cycle
2. The luteal phase. Luteal phase is the phase from ovulation to menstruation with an average duration of 14 days
Hormonal cycle and its relationship with ovarian and uterine cycles in the normal menstrual cycle:
1. Beginning of each menstrual cycle, gonadotropin hormone levels (FSH, LH) are at low levels and have declined since the end of the luteal phase of previous cycles
2. FSH hormones from the hypothalamus increased slowly after the end of the corpus luteum and follicular growth begins in the follicular phase. This is the trigger for the growth of the endometrial lining
3. Increased levels of estrogen cause a negative feedback on pituitary FSH expenditures. LH then declined as a result of increased levels of estradiol, but at the end of follicular phase LH hormone levels increase dramatically (biphasic response)
4. At the end of the follicular phase, FSH stimulates hormone receptor (receiver) LH hormone found in granulosa cells, and with stimulation of the LH hormone, progesterone out
5. After stimulation by the hormone estrogen, which causes the pituitary LH triggers ovulation which appears 24-36 hours later. Ovulation is a marker of the phase transition from proliferative to secretory phase, from the follicular to the luteal
6. Estrogen levels decline in the early luteal phase of the phase just before ovulation until mid-, and then increased again due to secretion from the corpus luteum
7. Progesterone increases after ovulation and may be a marker that ovulation has occurred
8. Both hormones estrogen and progesterone increase during the lifetime of the corpus luteum and kemuadian declined to prepare for the next cycle.
