The extra embryonic membranes of the mammalian embryo are derived from
Formative cells
Follicle cells
Trophoblast
Inner cell mass
Mammary glands are modified
Sertoli cells are found in
The target of $ICSH$ is
Urinary bladder of the embryo is or Which is the urinary bladder of child placed in the womb
In vertebrates the nails are formed from