feedback mechanisms

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5 Terms

1
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rising estrogen mid-cycle

positive feedback → LH surge → ovulation

2
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high progesterone

negative feedback → inhibits FSH and LH

3
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oxytocin during labour

positive feedback → more contractions

4
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follicular phase

FSH → follicles mature → estrogen → negative: FSH decreases OR positive: GnRH increase → LH surge →ovulation

5
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luteal phase

corpus luteum → progresterone increase + estrogen → thickens endometrium

progesterone increase + estrogen → negative feedback: decrease GnRH → decrease FSH and LH