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23 Cards in this Set
- Front
- Back
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how many days does the sperm last?
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3 - 4days
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How long does the ovum last?
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12 - 24 hours
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The blastocyst attaches to the uterine wall and draws nutrients from the ________
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endometrium
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What 2 structures develops into the placenta?
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Trophoblast
endometrium |
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What is the term for the response relying on the stroma being exposed to oestrogen and progesterone
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stroma decidualisation
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The endometrium is responsive to the blastocyst _____ days after post ovulation
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7 - 10
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In pregnancy what is the 1st trimester?
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the first 3 months of development
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In pregnancy what is the 2nd and 3rd trimester?
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The 3rd month to the 9th month
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Development of the placenta begins by the _____ sending out projections known as ___________
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chorion
chorionic villi |
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During the first 3 months the corpus luteum is kept intact by the hormone
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human chorionic gonadotrophin (HCG)
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HCG is produced by _________ cells
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trophoblast
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What is the 5 hormones that the placenta secretes?
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Progesterone
Oestrogen HCG human placental lactogen relaxin |
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HCG is the basis of _______ test
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pregnancy
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what chemical stimulates the corpus luteum into oestradiol and progesterone?
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luteotrophic hormone
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HCG production is __________ - independent of hypothalamus and pituitary
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autonomous
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The HPL has both ______ and ____ like actions
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lactogenic and GH
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What does the HPL stimulate in mothers?
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increase in lipolysis and increase in free fatty acids
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(Oestradiol/Oestriol) is produced by the corpus luteum and the placenta
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Oestradiol
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(Oestradiol/Oestriol) is produced by the foestus and placenta
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Oestriol
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What chemical inhibits uterine smooth muscle contractility
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Progesterone
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What chemical inhibits production of PGF2a and oxytocin
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Progesterone
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What chemical inhibits T-lymphocyte cell mediated response
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progesterone
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What are the actions of prostaglandins E2 and P4?
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block milk synthesis
block prolactin receptors for lactogenesis |
