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The Amazing Menstrual Cycle

It is awesome!!! No questions!

Andros Hadjopulos

on 10 December 2015

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Transcript of The Amazing Menstrual Cycle

Menstrual cycle
It is a cyclical process of the endometrium shedding its lining, along with discharge from the cervix and vagina, from the vaginal opening.
Who is responsible?
Follicle stimulating hormone (FSH)
growth and maturation of follicles
estrogen production
When does your cycle happen?
The Menstrual Cycle
what is going on in the menstrual cycle?
It can be divided into 4 stages:
Luteinizing hormone
induces ovulation
after ovulation it has an impact on forming of the corpus luteum
What happens
after ovulation?
or menstrual bleeding
The Zygote goes through mitosis.
Becalms an embryo.
Grows into a fetus inside the uterus.
Baby is born
The cycle takes 28 days and then starts over
Day 1-5
Day 1-13
Day 10-18
Day 15-28
Day 1-5: Menstrual Phase
Day 1-13 Follicular phase
Day 10-18 Ovulatory Phase
Day 15-28 Luteal phase
By: Vale Garcia, Andros Hadjopulos, Fer Paez
The menstrual cycle is under control of hormones secreted by the pituitary gland and the ovaries.
The pituitary gland itself is under control of the hypothalamus. The hypothalamus produces GnRH which stimulates the pituitary gland to secrete FSH.
FSH travels in the bloodstream to the ovaries and stimulates a group of follicles to grow. These follicles continue to develop and produce a hormone called estrogen which stimulates growth of the endometrium. The follicles compete with one another but only one follicle survives and matures.
The increasing level of estrogen also acts on the hypothalamus and the pituitary to increase the level of GnRH and induce the production of another hormone LH.
A surge in LH secretion triggers ovulation. The leftover of the ruptured follicle has become a corpus luteum which secretes progesterone. Progesterone further stimulates uterine development, making it a nutritious bed for the embryo in the event in pregnancy.
In the absence of pregnancy the corpus luteum breaks down and progesterone levels fall. This leads to the breakdown of the endometrium, menstruation begins, and the cycle starts over.
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