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6 Cards in this Set
- Front
- Back
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Follicle Stimulating Hormone (FSH) |
- stimulates growth of follicles - stimulates oestrogen secretion from larger follicles |
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Oestrogen (E2) |
- prepares uterus and vagina for mating and breeding, vagina cornified, vulva redden, swell and odour. - inhibits small follicle growth/promotes follice atresia - causes behavioural oestrus "heat" - increase and thickens cervical mucus - stimulates pituitary gland to release LH - Stimulates retrograde uterine contractions |
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Luteinising Hormone (LH) |
- stimulates thecal cells to produce androgens - causes ovulation (Graafian follicle bursts releasing ovum) - stimulates the remnants of the burst follicle to form a corpus luteum (luteinisation) - stimulates the corpus luteum to produce P4 |
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Progesterone (P4) |
- develops endometrium in prep for pregnancy -decreases cervical mucus secretion - prevents uterine contractions -causes development of plug in cervix -suppresses behavioural oestrus - inhibits follicle growth -sensitises the brain to E2 (for next oestrus) -inhibits immune activity of uterus -aids in mammogenesis |
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GnRH |
-controls secretion of gonadotrophins (LH and FSH) -changes the frequency of GnRH secretion by a pulse generator in the hypothalamus |
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PGF2a |
-destroys the corpus luteum (luteolysis) |
