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Which of the following is mismatched?


A) foramen ovale - ligamentum ovale
B) ductus arteriosus - ligamentum arteriosus
C) ductus venosus - ligamentum venosus
D) umbilical vein - ligamentum teres of the liver
E) umbilical arteries - cords of umbilical arteries

F) None of the above
G) B) and C)

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Arrange the following in the sequence in which they form in the embryo. (1) neural plate (2) neural tube (3) notochord (4) primitive streak


A) 1,2,3,4
B) 1,3,2,4
C) 4,3,1,2
D) 4,1,3,2
E) 3,4,1,2

F) B) and E)
G) D) and E)

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Which of the following sequences is correct?


A) mesonephros,pronephros,metanephros
B) metanephros,pronephros,mesonephros
C) pronephros,mesonephros,metanephros
D) pronephros,metanephros,mesonephros
E) mesonephros,metanephros,pronephros

F) A) and D)
G) C) and D)

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The time period between fertilization and implantation is approximately


A) 5 days.
B) 7 days.
C) 10 days.
D) 14 days.
E) 21 days.

F) A) and D)
G) All of the above

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What structure forms the roof of the mouth?


A) mesonephros
B) mandibular processes
C) neural tube
D) secondary palate
E) somites

F) D) and E)
G) A) and B)

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Through what structure do epiblast cells migrate to form the mesoderm?


A) lacunae
B) chorionic villi
C) hypoblast
D) primitive streak
E) blastocele

F) None of the above
G) A) and B)

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