WorksheetsHisto Carlson Lectures 1-2
Total questions: 25
Worksheet time: 13mins
Ovary definition
the component of the follicle that is released at the end of the follicular phase of the estrous cycle
contain the follicles that are the central determinants of the estrous cycle
a remnant of the follicle that facilitates the luteal phase
cells in the follicle and, later on, in the CL that regulate the estrous cycle
Oocyte definition
contain the follicles that are the central determinants of the estrous cycle
a remnant of the follicle that facilitates the luteal phase
the component of the follicle that is released at the end of the follicular phase of the estrous cycle
cells in the follicle and, later on, in the CL that regulate the estrous cycle
Estrous vs Estrus: Which definition defines estrous?
a series of temporal transitions that define the female reproductive cycle
a specific phase of the estrous cycle in which many hormones peak and sexual receptivity is highest
Anestrous vs Anestrus: which definition describes Anestrus?
a pathologic condition in which estrous does not return in a polyestrous animal (especially cattle), don’t go through sexual receptivity period
period in between estrous cycles (mono- and diestrous; seasonally polyestrous)
Which female reproductive hormone increases and decreases inversely to the other major female hormone?
progesterone
estrogen
LH
FSH
What is the order of synthesis of estrogen? What is the enzyme in the last step?
progesterone to estrogen to testosterone, aromatase
progesterone to testosterone to estrogen, aromatase
testosterone to progesterone to estrogen
Which hormones use intracellular receptors?
peptides; LH, FSH, GnRH, etc
lipid soluble hormones; estrogen, progestins
inhibin
Which hormones use cell surface receptors (GPCR)?
lipid soluble hormones; estrogen, progestins
inhibin
peptides; FSH, LH, GnRH, etc.
Which hormone uses a cell surface receptor that is not a GPCR?
progesterone
LH
PGF2-alpha
inhibin
What enzyme deficiency can lead to female virilization?
aromatase
peptidase
hormonase
lipase
Source of estrogen?
corpus luteum
anterior pituitary
follicle
primordial follicles secrete what?
inhibin
estrogen
LH
FSH
Dominant follicle releases large amounts of estrogen and inhibin which directly causes
release of FSH and LH
LH surge
GnRH released in large quantities
LH and FSH are at differing levels in the follicular phase because inhibin limits
FSH
LH
Once progesterone is low enough, ___ promotes LH and FSH release at the anterior pituitary
estrogen
testosterone
corticotropin
GnRH
LH and FSH promote ____ synthesis in the follicle
GnRH
testosterone
estrogen
progesterone
___ promotes the LH surge from the anterior pituitary at ovulation by inhibiting ____, like inhibin
FSH, estrogen
LH, estrogen
estrogen, LH
estrogen, FSH
____ stimulates synthesis of testosterone in the ___ cells
FSH
LH
theca
granulosa
Aromatase is activated by
FSH
GnRH
LH
estrogen
Granulosa cells will also synthesize progesterone in response to LH, but even in the absence of LH they can still make it
True
False
Super ovulation is
pathologic situation in which the follicle fails to ovulate
follicular development occurs in waves whereby the maturation process occurs 2-3 times per cycle
process in which the ovary is pharmacologically nudged to ovulate more than one ovum
FSH activates receptors on theca cells, LH activates receptors on theca and granulosa cells
True
False
PGF-2alpha is a lipid released from the uterus, released during ___ and is responsible for continuing the ___ cycle if the animal is not pregnant
diestrus
diestrous
estrous
estrus
Inhibin is released from ____ cells and mildly inhibits ____ and strongly inhibits ____
granulosa cells, FSH, GnRH
theca cells, GnRH, FSH
granulosa cells, GnRH, FSH
theca cells, FSH, GnRH
Receptor for GnRH is in the ___
Receptor for LH is in the ____
Receptor for FSH is in the ____
granulosa cells, theca cells, posterior pituitary
anterior pituitary, theca cells, granulosa cells
anterior pituitary, granulosa cells, theca cells
posterior pituitary, theca cells, granulosa cells
