Q. Formation of primitive streak marks the beginning of ____________

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Q. The notochord is essential for all except ____________

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Q. The signals for parturition arises from___________

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Q. The ectoderm cells will become skeletal system.

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Q. The anterior end of neural tube forms ____________

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Q. The placenta is delivered during second labor stage.

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Q. How many stages does parturition have?

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Q. Ectodermal cells thicken into placodes that develop into ___________

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Q. Organogenesis in the embryo is completed by the end of which stage of the pregnancy?

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Q. In meroblastic cleavage the cleavage occurs in the ___________

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Q. The embryo developed from somatic cells is called as _____________

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Q. The ____________ is the primitive digestive tract or gut.

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Q. Umbilical arteries carry __________ blood to the placenta.

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Q. Placenta produces __________

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Q. Placenta has fetal side and maternal side.

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Q. When does the development of heart begin?

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Q. Embryonic development includes first ___________ of development.

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Q. Development requires _____________

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Q. During which stage do the three primary layers first appear?

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Q. A newborn infant obtains maternal antibodies from _____________

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