26.5A The Ovarian Cycle Flashcards
The ___________ is the monthly series of events associated with maturation of oocytes and their follicles.
The ovarian cycle is the monthly series of events associated with maturation of oocytes and their follicles.
In the follicular phase, several primary follicles mature into secondary follicles.
Usually one _________follicle will develop into a _________follicle, and the ____________oocyte inside will become a _______oocyte.
In the follicular phase, several primary follicles mature into secondary follicles.
Usually one secondary follicle will develop into a vesicular follicle, and the primary oocyte inside will become a secondary oocyte.
Ovulation releases the ______ oocyte into the peritoneal cavity
Ovulation releases the secondary oocyte into the peritoneal cavity
In the ______ phase, the ______ follicle forms the ______ , which secretes ______ and ______ for the rest of the cycle.
In the luteal phase, the ruptured follicle forms the corpus luteum, which secretes progesterone and estrogens for the rest of the cycle.
The uterine cycle, the series of cyclic changes in the endometrium that occur each month in response to fluctuating ovarian hormones.
The uterine cycle, the series of cyclic changes in the ___________ that occur each month in response to fluctuating ovarian hormones.
Uterine Cycle:
In the_________phase, the uterus sheds the stratum functionalis of the endometrium through the vagina.
In the menstrual phase, the uterus sheds the stratum functionalis of the endometrium through the vagina. This phase results from rising FSH and LH levels and normal/low levels of estrogens and progesterone.
In the menstrual phase, the uterus sheds the stratum functionalis of the endometrium through the vagina. This phase results from ______FSH and LH levels and ___________ levels of estrogens and progesterone.
In the menstrual phase, the uterus sheds the stratum functionalis of the endometrium through the vagina. This phase results from rising FSH and LH levels and normal/low levels of estrogens and progesterone.
Topic: uterine cycle
In the ______________ phase, a new stratum functionalis grows and thickens as estrogen levels _____. Ovulation occurs in the ovary at the end of this phase.
In the proliferative phase, a new stratum functionalis grows and thickens as estrogen levels ______. Ovulation occurs in the ovary at the end of this phase.
In the__________ phase , the endometrium prepares for implantation of a conceptus by continuing to grow. If fertilization does not occur, the menstrual phase will follow.
In the secretory phase, the endometrium prepares for implantation of a conceptus by continuing to grow. If fertilization does not occur, the menstrual phase will follow.
The HPG axis controls the ovarian cycle.
The hypothalamus releases GnRH, which stimulates the anterior pituitary to secrete FSH and LH.
FSH and LH stimulate follicles to grow and secrete estrogens and inhibin, which inhibit the release of more FSH and LH.
One follicle eventually produces enough estrogens to exert positive feedback on the HPG axis, resulting in an LH surge and a rise in FSH. This triggers ovulation and transforms the ruptured follicle into the corpus luteum.
The corpus luteum produces progesterone and estrogens and will continue to do so if fertilization occurs. If fertilization does not occur, the progesterone level drops, and the cycle repeats.
The HPG axis controls the ovarian cycle.
The hypothalamus releases GnRH, which stimulates the anterior pituitary to secrete FSH and LH.
FSH and LH stimulate follicles to grow and secrete estrogens and inhibin, which inhibit the release of more FSH and LH.
One follicle eventually produces enough estrogens to exert positive feedback on the HPG axis, resulting in an LH surge and a rise in FSH. This triggers ovulation and transforms the ruptured follicle into the corpus luteum.
The corpus luteum produces progesterone and estrogens and will continue to do so if fertilization occurs. If fertilization does not occur, the progesterone level drops, and the cycle repeats.
