Uterine endometrium, epithelial glands and connective tissue are broken in menstrual phase. This is due to
Over secretion of $FSH$
Lack of oestrogen
Lack of progesterone
Over production of progesterone
Which of the following cannot pass through the placenta into the foetus
Placenta has an outer layer which is selectively permeable and hormone secreting which is known as
$A$ : The first sign of growing foetus may be noticed by listening to the heart sound through the stethoscope.
$R$ : By the end of second month of pregnancy, the foetus develops limbs and digits.
In rabbit, ex-abdominal reproductive organs are
What induces the completion of the meiotic division of the secondary oocyte?