Female Reproductive Tract- Witwer Flashcards
Menstrual Cycle is required for:
- production of ______
- Preparation of the ______
- **ovocytes
- uterus for pregnancy
Menarche=
first period
avrg period=
28 days
Sx associated with Menstrual cycle:
-Premenstrual symptoms are common, acne, tender breasts, bloating, malaise, iritability, mood changes.
- **If these interfere with normal activities = Premenstrual Syndrome
- -Severe in 3-8%
Menopause: women ____ yo
45-55 yo
Menstrual cycle: Three Components (list)
- Hypothalamus/Pituitary Cycle
- Ovarian cycle
- Uterine cycle
Describe the Hypothalamus/Pituitary Cycle (hormones)
- Hypothalamic Gonadotropin Releasing Hormone
- Follicle Stimulating Hormone
- Luteinizing Hormone
Describe the Ovarian Cycle:
Follicular Phase
Ovulation
Luteal Phase
Describe the uterine cycle
Menstruation
Proliferative Phase
Secretory Phase
Hypothalamus-Pituitary-Ovarian Axis
- Precise signalling b/w hypothalamus and ovary.
- Primary Signal is Hypothalamic GnRH (stimulating the release of FSH and LH from the anterior pituitary) feedback loop with ovarian androgen and estrogen steroids regulating the GnRH.
- FSH and LH act in concert to stimulate gamete (ovum) maturation and hormone production
Gametes are _____ cells
- *haploid
- -ovum or sperm cells
Slide 8
draw out
Menstrual cycle:
Three Ovarian phases–>
Follicular=
Ovulatory=
Luteal=
Follicular–> Granulosa cells proliferate in response to Follicle Stimulating Hormone (FSH) and produce estradiol
-Luteinizing Hormone (LH) stimulates Theca
cells to produce androgens > estradiol in
granulosa cells
-Estradiol and progestins stimulate Gonadotropin Releasing Hormone (GnRH) which stimulates FSH and LH and induces ovulation
-Ovulatory –
Luteal–> after ovulation, follicular cells transform into Corpus Luteum in response to Luteinizing Hormone and produce progesterone and estrodiol and these along with Inhibin produced by granulosa cells suppresses LH and FSH.
Without fertilization, corpus luteum regresses
and cycle starts again.
Hormonal Regulation of Menstrual Cycle
GnRH = Gonadotropin Releasing Hormone
Granulosa cells = follicle cells – produce sex hormones in ovary.
Fertilization= ____ hours
12-24
Zygote (2-cell stage) approx. ____ hrs
30
Four cell stage=
40 hrs
**Early Morada= ____ hrs
80 hrs**
Blastocyst approx __ days
5 days
Early implantation approx. __ days
6
Vaginal Developmental Variants (list ex’s)
- Double Vagina
- Absence of Vagina
- Rudimentary second vagina without external opening forming a cyst
(these are rare)
Uterine Developmental Variants (ex’s)
Uterus Didelphys= 2 uteruses
Uterus Duplex bicornis= this means a horned uterus (not uncommon)
Normal Variations of the uterus:
retroverted, anteverted, retroflexed, anteflexed
Retrocession= whole uterus moves posteriorly
Vulvar Disease - Benign
-list Ex’s
varicose veins, Angioneurotic edema, Bartholin cyst, Sebaceous cyst, Lipoma, fibroma