reproductie hormones - ovarian Flashcards
1
Q
FSH (follicle stimulating hormone)
A
- stimulates primary to become secondary follicle
- inhibited by P (FSH increases when P decreases)
2
Q
LH (luteinizing hormone)
A
stimulates estrogen production from theca and granulosa cells of follicle
surge in LH causes ovulation and then formation of corpus luteum from remnants
of follicle
in follicular phase - estrogen from secondary follicle rises for a few days ⇒ LH release (via GnRH) ⇒ stim. follicle to ⇑ E secretion etc (positive feedback) ⇒
leads to LH surge
luteal phase – progesterone inhibits LH release
3
Q
estrogen
A
-required for ovulation
-development of sex characteristics
-stimulates growth of an maintains endometrium
-stimulates bone growth during puberty and later in life (18-20) closure of epiphyses
4
Q
progesterone
A
-form corpus luteum
-prepares uterus for pregnancy
5
Q
A
6
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7
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8
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9
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10
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11
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12
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13
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14
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