Embryology Flashcards
(28 cards)
What is this equation for? (large baby - small baby) / large baby
IDK
Percent of deliveries with both vertex babies
40%
Percent of deliveries with fetus A vertex and fetus B breech
25%
Percent of deliveries with fetus A breech and fetus B vertex
15%
Percent of deliveries with both fetuses breech
10%
What percent of twins are dizygous?
66% (8/12)
What percent of twins are monozygous?
33% (4/12)
What percent of mono twins are dichorionic/diamnionic?
1/3
What percent of twins are monochoronic/diamnionic?
2/3
What day does splitting of the egg in monozygous twins occur to produce di-di twins?
0-3
What day does splitting of the egg in monozygous twins occur to produce monochorionic-diamnionic twins?
4-8
What day does splitting of the egg in monozygous twins occur to produce mono-mono twins?
9-12 (this occurs <1% of the time)
What day does splitting of the egg in monozygous twins occur to produce conjoined twins?
13+ (occurs <1% of the time)
What is the most common type of conjoined twin (where are they conjoined)?
Thoracoagus
Is a fertilized egg haploid or diploid?
Haploid (n) + Haploid (n)
What cell stage is a zygote (sperm and egg nuclei) in?
Metaphase
It is diploid (2n)
How many days post fertilization is an embryo a morula (16 cells)?
2-3 days
How many days post fertilization is an embryo a blastocyst (32 cells)?
4-5 days
What is the male homologue of the paraurethral glands?
Prostate gland
What is the male homologue of the labia majora?
Scrotum
What is the male homologue of the labia minora?
Median raphe
What is the male homologue of the round ligament?
Gubernaculum testis
What is the male homologue of the Gartner’s duct?
Vas deferens
What is the male homologue of the clitoris?
Phallus
