tompat
Forum Elite
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hmm now we have a 26 yr old afro-american with a twin pregnacy, one male and one female fetus.she is now 20 weeks pregnant,what would be the estrogen circulating in mothers blood,type n origin
A.estradiol,from her own ovaries.
B.estradiol, from placenta prepared from her adrenal androgens.
C.estriol, from placenta prepared from female fetus adrenal androgens
D.estriol, from placenta prepared from both fetal adrenal androgens
E.estrdiol, from placenta prepared from mothers cholesterol
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| paganini
Forum Senior
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After 6 weeks placenta is producing estrogens.
Ans: D
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| po
Forum Elite
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I know it estriol,[ from placenta prepared from both fetal adrenal androgens ]is basis for making downs diagnosis,but E also seems right which is responsible for maintaining the pregnancy
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| paganini
Forum Senior
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the placenta produces estriol, ovaries estradiol
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| tompat
Forum Elite
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yes D is the ans.
about estradiol,i think it is mainly secreted by ovary and is resposible until 3 rd month of pregnancy.
then afterward its estriol,from placenta. it's been mentioned in k notes that if u remove both ovaries after 3 months of pregnacy , it continues.
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| po
Forum Elite
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wow,had not touched kaplan physio;such a huge book compared to all others.
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| tompat
Forum Elite
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fetal adrenal lacks 3 beta hydroxysteroid dehydrogenase necessary for conversion of DHEA into testosteron,and also production of gluco n mineralo corticoids is hampered.
DHEA goes to placenta and gets converted to estriol.
correlation:
in DCT cells 11 beta hydroxysteroid dehydrogenase is present which degrades cortisol.
chinese people eat LICORICE a tonic, which inhibits this enzyme, so cortisol goes unchecked and it acts on aldosteron receptors. result is hypertention and hypokalemia.
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| keepgoing
Forum Fanatic
Topics: 115
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yes remember like this
single female--estrone
married---estrdiol
pregnant(mother,father,and baby)---estrtriol
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