12 notecards = 3 pages (4 cards per page)
First stage of puberty. Breast development.
Second stage - development of axilla hair
Second stage - development of pubic hair
Third stage - rapid growth in height
Final stage - onset of menses. Will not grow more than 3" in height following.
No period by age 14 in the absence of secondary sexual characteristics, or no period by age 16 in presence of secondary sexual characteristics.
Role of Hypothalamus
Releases GnRH to stimulate pituitary gland
Role of Pituitary
Releases LH and FSH in response to stimulation from GnRH.
Role of Ovary
LH acts on Theca cells to create androgen precursors for estrogen. FSH acts on Granulosa cells to create androgen precursors for estradiol. These causes Ovary to release egg.
Creates the proliferative endometrium to prepare for fertilized egg implantation. Rising levels also cause mid-cycle LH surge which triggers ovulation.
Creates the secretory endometrium if no implantation and would nourish fetus if implantation. Post ovulation phase.
21 to 35 days