Flashcards in Ovarian Histology Deck (40):
What are the exocrine functions of the ovary?
What are the endocrine functions of the ovary?
What structures within the ovary produce estrogen?
Which structure in the ovary produces progesterone?
What structures suspend the ovary?
What type of tissue makes up the ovarian medulla?
Loose fibroelastic connective tissue
What structures make up the ovarian cortex?
Where do primordial germ cells come from?
During which fetal month do oogonia become 1° oocytes?
In what phase of mitosis/meiosis are 1° oocytes arrested?
In what phase are 2° oocytes arrested?
When is the first meiosis completed?
Just prior to ovulation
When is the second first meiosis completed?
Just after fertilization
What are the six phases of follicular development?
Unilaminar primary follicle
Multilaminar primary follicle
Graafian (mature) follicle
What two cell types are involved with primordial follicles?
What is the zona pellucida made of?
Gel-like neutral proteins
What structure forms during secondary follicle formation?
What cells form around the oocyte inside the theca?
What cells are in the theca interna?
What do follicle cells produce?
What do granulosa cells produce?
How much time does it take to mature an immature follicle?
What signals the final maturation of graafian follicles?
When is the first polar body produced?
When the 1° oocyte becomes the 2° oocyte
What is the bundle of granulosa cells around the oocyte in a graafian follicle?
Corona Cumulus oophorus
What What is left behind in the ovary by a released ovum?
What role does FSH play in ovulation?
Stimulates granulosa cell growth and estrogen synthesis
Stimulates LH receptor synth
What role does LH play in ovulation?
Stimulates thecal cell growth and androgen production
Stimulates progesterone production in granulosa cells
What, specifically, is the trigger for ovulation?
What enzyme is important for conversion of Testosterone to estrogen?
What must the testosterone cross in order to become estrogen?
Leave theca cell
Cross Membrana granulosa
Enter granulosa cell
What hormone levels increase substantially during the luteal phase?
What does the corpus luteum become after 14 days and with no pregnancy?
What maintains the corpus luteum in pregnancy?
What is the role of estrogen in the menstrual cycle?
Directs repair of uterus following menstruation
What hormone primarily stimulates the breasts to develop?
What is the role of progesterone in the menstrual cycle?
Prepares uterus for implantation (pro-gestation)
What makes relaxin?
Corpus luteum and decidual cells of placenta
What is the role of relaxin?
Inhibits contractions of myometrium during pregnancy
Promotes cervical dilation
Relaxes symphysis pubis