Female reproductive system histology Flashcards
Which structures help guide the egg from the ovaries into the uterine tube?
Fimbriae
What are the 3 stages of the ovarian cycle?
Follicular
Ovulation
Luteal
Which days is the follicular phase?
Days 0-13
Which day is ovulation?
Day 14
Which days is the the luteal phase?
Days 15-28
Which hormone that regulates the ovarian cycle is produced by the hypothalamus?
Gonadotropin-releasing hormone (GnRH)
Which 2 hormones that regulate the ovarian cycle are produced by the anterior pituitary?
LH
FSH
The ovulated (empty) follicle transforms into what?
Corpus luteum
Which hormone is primarily secreted by the corpus luteum?
Progesterone
What is the effect of progesterone on the endometrium (lining) of the uterus?
Causes it to thicken
Which hormone preserves the corpus luteum in the event of pregnancy?
Human chorionic gonadotropin (hCG)
At which week of pregnancy does the corpus luteum degenerate?
9th week
What does the corpus luteum degenerate into?
Corpus albicans
Which hormone is primarily responsible for inducing ovulation?
LH
Which phase of the cell growth cycle are primordial follicles suspended in?
Prophase
What are the 4 regions of the uterine tube?
Interstitial
Isthmus
Ampulla
Infundibulum
Which section of the uterine tube is the narrowest?
Isthmus
In which section of the uterine tube does fertilisation usually occur?
Ampulla
What is the epithelium of the uterine tube?
Ciliated simple columnar
What is the main secretory cell of the uterine tube?
Peg cells
What is the smooth muscle of the uterus called?
Myometrium
During birth, strong contractions of the myometrium are reinforced by the action of which hormone?
Oxytocin
Where is oxytocin released from?
Posterior pituitary
What are leiomyomas (fibroids)?
Benign smooth muscle tumours on the myometrium