Endocrine Cycle
What is the principle modulator of hypothalamus-pituitary activity?
Estrogen
How many oocytes go through full maturation and ovulation?
400
Follicle growth produces low levels of these 2 hormones
estrogen
progesterone
Which menstrual cycle phase would the endometrium appear thin and ill-defined?
Menses
Which phase is the functional endometrial layer shed?
Menses
What 2 hormones do the pituitary glands secrete?
FSH and LH
Without fertilization, corpus luteum regresses and becomes ______ _____; “whitening body”
Without fertilization, corpus luteum regresses and becomes corpus albicans; “whitening body”
estrogen and progesterone
What structure produces the "ring of fire"?
Involuting corpus luteum
Endometrium BEGINS to thicken during this phase
Proliferative phase
What is LH responsible for?
Inducing ovulation
Which phase does the follicle transform into a corpus luteum?
Luteal phase
estrogen levels peak causing ___ surge
LH
What is the endometrial strip measurement of EARLY proliferative phase?
4-8 mm
Late Proliferative phase may also be called
Periovulatory
Progesterone secreted by the corpus luteum to ______ secretion of cervical glands and LH and _______ secretion of endometrial glands.
Progesterone secreted by the corpus luteum to inhibit secretion of cervical glands and LH and induce secretion of endometrial glands.
During preovulatory phase, secondary follicle matures into _____ _____ and other maturing follicles undergo ____
Secondary follicle matures into Graafian follicle and other maturing follicles undergo atresia
Proliferative phase
During which part/phase would you see the tri-laminar appearance?
Be specific ;)
Late Proliferative
Postmenstrual phase
the hypothalamus produces these 2 gonadotroponin releasing factors (GnRF) AND activates this part of the brain
1. Follicle stimulating hormone releasing factor (FSHRF)
2. Luteinizing hormone releasing factor (LHRF)
3. Activates anterior pituitary gland
name the 5 phases of the ovarian cycle AND the days
1. Follicular phase (day 1-5)
2. Antral Phase (day 5-7)
3. Preovulatory Phate (day 6-13)
4. Ovulation (day 14)
5. Luteal phase (day 15-28)
Which hormone is mainly responsible for maintenance of endometrium?
Progesterone
During the secretory phase, what is the range of measurement for the endometrium?
7-14mm
Name the 5 menstrual phases AND their days
1. Menses (Days 1-5)
2. Postmenstrual phase (Days 6-9)
3. Proliferative phase (Days 6-13)
4. Secretory phase (Days 13-27)
5. Ischemic phase (Days 27-28)