Hormone responsible for the secretion of milk after parturition is
a)	ICSH	b)	Prolactin	c)	ACTH	d)	LH

(b)

Prolactin is secreted by the lactotopes cells of anterior pituitary. In humans, it may act as a mild growth hormone but its main physiological effect is to activate growth of breast during pregnancy and secretion of milk by mammary glands after childbirth. That’s why, it is often referred to as ‘maternity hormone’.