The extra-embryonic membranes of the mammalian embryo are derived from
- AFormative cells
- BFollicle cells
- CInner cell mass
- DTrophoblast
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Similar Questions
Match the following columns regarding human embryonic development:
Column-$I$ (Time of gestation) Column-$II$ (Changes in embryo) $P$. After one month $I$. Major organ systems are formed $Q$. End of second month $II$. Formation of heart $R$. End of three months $III$. Development of limbs and digits $S$. During fifth month $IV$. Movement of fetus and hair on head
| Column-$I$ (Time of gestation) | Column-$II$ (Changes in embryo) |
| $P$. After one month | $I$. Major organ systems are formed |
| $Q$. End of second month | $II$. Formation of heart |
| $R$. End of three months | $III$. Development of limbs and digits |
| $S$. During fifth month | $IV$. Movement of fetus and hair on head |
Medium
View SolutionDuring the development of an embryo,which of the following occurs first?
Medium
View SolutionMatch the hormone with its site of production:
Hormone Site of production $A$. $hCG$ and $hPL$ $(ii)$ Placenta $B$. Progesterone $(iii)$ Corpus luteum $C$. Androgens $(iv)$ Leydig cells $D$. Relaxin $(i)$ Ovary
| Hormone | Site of production |
|---|---|
| $A$. $hCG$ and $hPL$ | $(ii)$ Placenta |
| $B$. Progesterone | $(iii)$ Corpus luteum |
| $C$. Androgens | $(iv)$ Leydig cells |
| $D$. Relaxin | $(i)$ Ovary |
The placenta in mammals is derived from which of the following?
Medium
View SolutionWrite a note on pregnancy and embryonic development in human beings.
Medium
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