Which of the following hormones is not a secretary product of human placenta?
Human chorionic gonadotrophin
Prolactin
Oestrogen
Progesterone
Which of the following is not the function of Sertoli cells (sustentacular cells)?
Gonads are derived from embryonic
Which one of the following events immediately follows the entry of a spermatozoan into an oocyte
Mammalian embryo is directly surrounded by
Notochord, skeletal system and dermis of the skin are the derivatives of