BIO PPT 1 Menstrual Cycle Flashcards
refers to the regular changes in the activity of the ovaries and endometrium that makes the reproduction possible.
Menstrual Cycle
2 Menstrual Cycle Processes
Ovarian Cycle,
Uterine Cycle
focus on the development of follicles and ovulation
Ovarian Cycle
focus on thickening and shedding of endometrium
Uterine Cycle
Phases of Ovarian Cycle
1st : Follicular Phase
2nd : Ovulation Phase
3rd : Luteal Phase
Phases of Uterine Cycle
1st : Menstrual Phase
2nd : Proliferative Phase
3rd : Secretory Phase
starts on the first day of menstruation and continues until ovulation.
1st : Follicular Phase
1st : Follicular Phase
This corresponds to the menstrual phase and proliferative phase of the uterine cycle.
follicles inside the ovary starts growing due to the follicle-stimulating hormone (FSH)
1st : Follicular Phase
As the dominant follicle matures, it produces increasing levels of estrogen.
1st : Follicular Phase
The bleeding that commonly takes 3-5 days or for some 7 days.
1st : Menstrual Phase
During Menstrual Phase, the endometrium sheds, resulting in the release of blood and other tissues through the vagina.
1st : Menstrual Phase
During this time, endometrium starts to thicken again as the dominant follicle inside the ovary matures.
2nd : Proliferative Phase
Remember: On the last day of the proliferative phase the ovulation happens. This marks the transition to the next phase.
2nd : Proliferative Phase
During ovulation, a mature egg is released from the ovary and travels down the fallopian tube, where it may be fertilized by sperm.
2nd : Ovulation Phase
Ovulation does not happen if you are :
a. on a contraceptive pill
b. pregnant
c. postmenopausal
the empty follicle that releases an egg during ovulation will transform into a structure called the corpus luteum. The corpus luteum produces progesterone, along with some estrogen.
3rd : Luteal Phase
it is when the endometrial glands secrete mucus to prepare the uterus for a potential pregnancy.
3rd : Secretory Phase
Remember
If the woman doesn’t get pregnant, the corpus luteum will dissolve and the hormone levels will decline. And if this happens, the lining of the uterus or the endometrium will shed.
