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15 Cards in this Set

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  • Back

monozygotic twins arise from

a single zygote

dizygotic twins arise from

two separate zygotes

what are the two types of twins

dizygotic and monozygotic twins

what results from union of two sperm and two ova

dizygotic twins

Which twins can be different sexes ,different genetic make up and ALWAYS HAVE SEPARATE PLACENTAS

dizygotic twins

twins that result from union of one sperm and one ova

monozygotic

when is twins growth similar to singletons and when isn't it

its similar up to 30 weeks after 30 weeks twins growth decreases when compared to singletons

what are monozygotic twins considered at days 0-4

dichorionic amniotic

what are monozygotic twins considered at days 4-8

monochorionic diamniotic

most common type of monozygotic twins

monochorionic daimniotic

what are monozygotic twins considered at days8-13

monochorionic monoamniotic

what are monozygotic twins considered at days after day 13

conjoined twins

what does monochorionic mono amniotic for the placenta

only one placenta

what does monochorionic diamniotic for the placenta

only one placenta

what does diachronic diamniotic mean for the placenta

2 placentas