Question

on day 10 era 17. What uterine tissue undergoes dramatic changes during the menstrual cycle) rual cycle? endometrium cely? Explain why three da interval, 14-16 days around ountation th 18. When during the female menstrual cycle would fertilization be most likely? Explain why 19. The menstrual cycle depends on events within the female ovary. The ends on events within the female ovary. The stages of the menstrual cycle are listed below. For each pote its approximate time span and the related events in the uterus, and then to the right, record the ovarian events occurring simultaneously. Pay particular attention to hormonal events. Menstrual cycle stage Uterine events Ovarian events Menstruation Days 1-5 Proliferative Days 6-14 Secretory Days 15-28 20. Endometriosis occurs when fragments of endometrial tissue undergo retrograde (moving backward) menstruation resulting in displaced tissue that often attaches to the peritoneum of the pelvic cavity. These fragments respond to hormonal changes, resulting in bouts of severe pain even after menstruation has ended. Explain how the female anatomy contributes to the ability of this tissue to relocate and attach to the peritoneum. 21. Natural family planning, or fertility awareness, is a method that can be used to achieve or prevent pregnancy. It is based the ability to predict ovulation. Measuring which hormone would be the best predictor for ovulation, and why

Answer 1

17. Endometrium

18.fertilization is most likely after 12-24 hrs of ovulation and ovulation occurs on day 14 of cycle. So after 12-24 nrs of ovulation , egg reaches in fallopian tube from ovary to get fertilise.

19.

	Uterine	ovarian
Menstrual phase	endometrial wall shedding progestrone level falls	Scar of corpus luteum
Proliferative	proliferation of endometrium and secrretion of mucous under the effect of oestrogen released from follicle Cervical mucous watery stingy cervical os is open	follicle maturation around 14th day, oestrogen stimulates pituitary gland to secrete leutinizing hormone to rupture matured follicle
Secretory	endometrial thickening and mucus secretion. Thick cervical mucous cervical os closed with cervical plug formation	Corpus luteum secretes progestrone

20. Structural defects of the uterus likely contribute to dysfunctional uterine contractions and abnormal blood flow during menstruation, i.e. retrograde menstruation. Both obstructive and nonobstructive uterine anomalies can lead to increased retrograde menstruation. dysfunctional uterine peristalsis (movement) and the distribution of ectopic endometrial tissue.The combination of dysperistalsis and retrograde menstruation with a receptive peritoneum to this menstrual debris causes increased risk pf endometriosis.

21. Leutinizing hormone as it increases at the time of ovulation. It causes the realease of estrogen that results in rupture of ovarian follicle to release egg.