Placenta secretes
$HCG$ (Human Chorionic Gonadotrophin)
Human placental lactogen
Oestrogen
All of the above
Egg which contains very little amount of yolk are called as
The region where sperm enters the egg is called
The amnion of mammalian embryo is derived from
By the contraction of spermatic cord the testis of man are not taken to the abdominal cavity. It is due to the following structure
Function of fertilizin is/are