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By day six, the follicle inside the ovary is actively secreting estrogen, till estrogen serum ranges reach
their threshold worth at round day 11. Between days 11 and 14 the LH
surge is actively promoting oocyte division and follicular rupture so that ovulation may occur at
day 14 of the cycle. By the time the ovarian estrogen manufacturing reaches its
maximum before day 14, the destructive feedback impact on the anterior pituitary is reversed to a dramatically optimistic one and a burst-like
surge of saved LH is released (Marieb 982). The LH surge is
actually answerable for affecting the ultimate development, and subsequent rupture of the
mature follicle. In the next two days LH levels are elevated and follicles stimulated to mature so
that by the start of the brand new cycle, estrogen levels are once once more on the rise (Marieb 982).
In summary then, the hormonal cycle could also be considered as the next series of events: 1.
Luteinizing hormone rises and stimulates the follicle to
supply estrogen 2. As estrogen is produced by the follicle, estrogen levels rise inhibiting the
output of LH 3. Estrogen ranges continue to rise to the threshold
level at which level the negative feedback is reversed and LH surges 4.
Ovulation occurs simply after the LH surge damaging the estrogen-producing
cells which leads to a decline in estrogen 5. The LH surge results
within the establishment of the corpus luteum -- an estrogen and
progesterone secreting gland 6. Estrogen and progesterone serum
ranges climb steadily, supressing LH output 7. Lack
of LH promotes the degeneration of the corpus luteum 8.
Cessation of corpus luteum exercise means a decline in estrogen and progesterone
output 9. The decline within the ovarian hormones ends their
destructive effect on the secretion of LH 10. LH is secreted and the cycle
begins once more (Marieb 982). Knowing these basic developments is paramount in translating the biological
actions associated with the hormonal cycle into purely
mathematical statements a system of difference equations.