Female Flashcards
(17 cards)
Females born with how many eggs
2 mill primary oocytes
Germ cells of females called
Oogonia
Follicle cells
flattened cells that surround the oogonia to protect it and encourage growth and development
Primary oocyte does what …
begin first meiotic division during early development but pause in meiosis 1 during prophase 1
Secondary oocyte (general what it is)
Egg released from ovary during ovulation
Differences between spermatogenesis and oogenesis
Starting point in meiotic divisions
End result in gametes
End result in amount
Symmetrical v. Asymmetrical
Overall goal (quality v. quantity)
Time span (weeks v. Years )
Hormone that inhibits release of GnRH until puberty
Estrogen
FSH & LH (women)
Increase follicule growth /maturation and release estrogen
Menstrual phase (1-5 days)
Part of uterine cycle
Estrogen levels go from low to rising and as they begin NEGATIVE FEEDBACK interaction with anterior pituitary
Decreases release of FSH and LH & inhibin
As estrogen rises turn off meneses
Proliferation phase day (6-14)
GnRH rise = FSH/LH/Estrogen rise = more growth of endometrium
POSITIVE FEEDBACK as FDH &LH surge in causing follicule to burst aka ovulation (day 14)
Btw day 5-13 estrogen is initiating the development of uterine lining after meneses
By the time…1…is released(..2..) the ..3.. of the uterine cycle has ended and left the uterus with..4..
- Egg is released
- Ovulation day 14
- proliferation phase
- Thick nourishing enometrium
Follicular phase (day 1-13)
GnRH rise which makes FSH &LH &estrogen rise
•FSH helps to develop follicle•
Inhibin causes negative feedback to try to slow down
Ovulation day 14
GnRH FSH&LH rise which means super high estrogen
Luteal phase (14-28)
Lots of estrogen and progesterone triggers Inhibin which stops GnRH which = decrease in estrogen(negative feedback)
LH present = no corpus luteum which decreases progesterone and increases GnRH FSH & LH
= rid of follicle corpus luteum then after like 10 days start releasing GnRH & process starts over
If woman becomes pregnant (think terms of corpus luteum)
Corpus luteum supplies hormones and nutrients (mostly estrogen and progesterone) to make uterus nourishing (known as secreting phase in uterine)
Once corpus luteum degrades embryo will produce its own hormones and placenta
Ovarian cycle hormonal changes prior to puberty
SOME GnRH FSH&LH = SOME estrogen
Develop early oocytes (negative feedback)
Uterine cycle prior to puberty
Low GnRH = low FSH& LH= low estrogen means no activity AKA no period
