Menstruation Flashcards
Episodic uterine bleeding in response to cyclic hormonal changes.
Menstruation
give 2 purpose of menstrual cycle
o To bring an ovum to maturity.
o Renew a uterine tissue bed that will be necessary for the ova’s growth should it be fertilized
give 4 VITAL BODY STRUCTURES THAT ARE INVOLVED IN PHYSIOLOGY OF MENSTRUAL
CYCLE:
- Hypothalamus
- Ovaries
- Uterus
- Pituitary Gland
hypothalamus would release that would initiate?
releases GnRH or LHRH which initiates the menstrual cycle.
physiology of GnRh in estrogen formation
stimulates the anterior pituitary gland to send FSH and LH to the ovaries to produce estrogen.
what happens to GnRH when estrogen rises?
①release of GnRH is repressed and no further menstrual cycle will occur.
Under the influence of GnRH, the pituitary gland would release?
FSH and LH
when is FSH active?
and give its responsibility
active early in the cycle, responsible for maturation of the ovum.
when is LH active?
and give its responsibility
③most active at midpoint of the cycle; responsible for: ✅Ovulation (release of the egg) ✅Stimulating the growth of the uterine lining during the second half of the cycle.
month during the fertile period of a woman’s life (from menarche to menopause what would the FSH do?
④will activate 1 oocyte to grow and mature.
As the oocyte grows, what will it produce? and what does it contain?
(follicular fluid) containing high levels of estrogen (mainly estradiol) and some progesterone.
As the follicle surrounding the oocyte grows it ris propelled where?
surface of the ovary.
At this stage of maturation, a small ovum with its surrounding follicular membrane and fluid is called?
GRAAFIAN FOLLICLE.
what happens at 14 or the midpoint of a typical 28-day cycle,
ovum has divided by mitotic division into 2
ovum has divided by mitotic division into 2
✅Primary oocyte which contains the bulk of the cytoplasm.
✅Secondary oocyte containing so little cytoplasm making it nonfunctional.
