Explain the process of lactation.
The mammary glands of the female undergo differentiation during pregnancy and starts producing milk towards the end of pregnancy by the process called lactation.
The milk produced during the initial few days of lactation is called colostrum which contains antibody $(\operatorname{Ig} \mathrm{A})$.
Breast-feeding during the initial period of infant growth is recommended by doctors for bringing up a healthy baby.
The synthesis of milk in mammary gland is done by prolaction of anterior pituitary.
Fertilization is fusion of
Germinal epithelium gives rise to
The amniotic fluid is taken out with the help of surgical needle and separation of the embryo cells present in this fluid is done by
$A$ : After menopause the levels of blood gonadotropins will rise markedly.
$R$ : At the time of menopause all the ovarian follicles are converted into follicular atresia and the ovaries are not responding to the gonadotropins
The stroma of the ovary consists of nerves, blood vessels, muscle fibres and a type of protein called