In which of the following the placenta forms an important structure in development
Amphibian
Reptiles
Birds
Mammals
It's Obvious
Foetus is nourished by
Which one of the following statements with regard to embryonic development in humans is correct?
After one month of pregnancy, the embryo's $…A….$ is formed. By the end of the $…..B…$ month of pregnancy, the foetus develops limbs and digits. By the end of $\ldots$… most of the major organ systems are formed for example, the limbs and external genital organs are well-developed. By the end of $…D….$ the body is covered with fine hair, eyelids separate, and eyelashes are formed. Here$ A$ and $D$ refers to
Mammalian placenta has minute finger like projections called
During pregnancy the level of which hormones are increased ?
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