chronic villus sampling and amniocentesis are prenatal tests that can be done to check for certain...
chronic villus sampling and amniocentesis are prenatal tests that can be done to check for certain genetic conditions or a chromosomal condition.
a. What part of the human blastocyst gives rise to the chorion and amnion?
b. What do these layers have in common?
Homework Answers
Ans.a. chorion and amnion are arised from the extraembryonic mesoderm and trophotectoderm layer.
Ans.b. chorion covers the embroyo outside and helps in the formation of placenta and embedded into endometrium to absorb the nutrients.and amnion covers the amniotic cavity which contain amniotic fluid and present inside the placenta. Both chorion and amnion arised from mesoderm layer and both helps in the formation of amniotic sac.
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chronic villus sampling and amniocentesis are prenatal tests
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