Chapter 4 Female Reproductive Physiology Flashcards
interaction among the
- hypothalamus,
- pituitary gland
- ovaries
- endometrium
anterior pituitary produce 6 protein hormones:
- follicle stimulating hormone (FSH)
- luteinizing hormone (LH)
- thyroid stimulating hormone (TSH)
- prolactin
- growth hormone (GH
- adrenocorticotropic hormone (ACTH)
FSH and LH are synthesized and stored in cells called
gonadotrophs
FSH, LH, TSH are glycoproteins consisting of
alpha and beta subunits.
__ subunits of fsh, lh, tsh are identical
alpha
the same alpha subunit is also present in
hcg - human chorionic gonadotropin
the _ subunit are individual for each hormone
beta
prolactin is secreted by
lactotrophs
normal ovulatory cycle divided into
- follicular
2. luteal
follicular phase begins with the ___ and culminates in the preovulatory surge of LH
onset of menses
luteal phase begins with the onset of preovulatory __ and __
LH surge and ends with the 1st day of menses.
decreasing levels of __ and __ from regression of the corpus luteum of the preceding cycle initiates an increase in FSH by a negative feedback mechanism, which stimulates follicular growth and estradiol secretion
estradiol and progesterone.
LH stimulates the theca cells to produce __
androgens (androstenedione and testosterone)
FSH stimulates the granulosa cells to convert these androgens into
estrogens