reproductive sq's Flashcards
Progesterone:
-female sex hormone that does not cause development of secondary sex characteristics
FSH:
- released from the anterior pituitary
- anterior pituitary hormone that stimulates the Sertoli cells
- three hormones needed for spermatogenesis
- anterior pituitary hormone that stimulates follicle development
- three hormones needed for follicle development
LH:
- Released from the anterior pituitary
- also called interstitial cell stimulating hormone
- causes the Leydig cells to secrete testosterone
- three hormones needed for spermatogenesis
- three hormones needed for follicle development
- causes ovulation
- causes formation of the corpus luteum
- low levels are needed to maintain corpus luteum
Testosterone:
- Responsible for secondary characteristics in the mail
- secreted from the developing testes before birth and causes mail.development
- decreases GnRh & LH release
- three hormones needed for spermatogenesis
- Acts locally on the Sertoli cells and help stimulate spermatogenesis
Estrogen
- responsible for secondary characteristics in the female
2. three hormones needed for the follicle to develop
Inhibin
- decreases FSH release
The uterine menstrual phase
- estrogen and progesterone are both at their lowest levels
2. the negative feedback effect on the hypothalamus is removed due to low estrogen and progesterone
the uterine proliferative phase
- the graafian follicle is present
- a peek in estrogen occurs and causes a positive feedback effect on the hypothalamus and anterior pituitary
- the LH surge occurs
- the endometrium repairs and blood vessels and glands begin growing
the uterine secretory phase
- the corpus luteum is present in the ovary
- the corpus luteum begins degenerating and estrogen and progesterone levels begin to decrease
- occurs at the same time as the ovarian luteal phase
- glands and endometrium are at their most developed state and are secreting glycogen
- estrogen and progesterone are both high
- negative feedback effect on the hypothalamus and anterior pituitary
both the uterine menstrual & proliferative phases
- follicles are present in developing in the ovary
2. occurs during the ovarian follicular phase
None of the uterine phases
Phase in which progesterone is the only sex hormone secreted
The Ovarian follicular phase
- a mature follicle develops is present
2. follicles are developing an ovary
The ovarian luteal phase
- Estrogen and progesterone are secreted by the cells in the ovary
- the corpus luteum is present
In both ovarian follicular phase ovarian luteal phases
- estrogen is secreted by cells in the ovary
In neither ovarian follicular phase nor the ovarian luteal phase
- several graafian follicles are normally present
2. only progesterone is secreted from the ovary
