Question

The hormone responsible for milk formation and secretion in alveoli of mammary gland is
A. Vasopressin
B. Oxytocin
C. Prolactin
D. Prolactin and Oxytocin respectively

Answer 1

Hint: Mammary glands are modified sweat gland. Main function of the mammary gland is production of milk. Breast has a broad multiporous tip called nipple for the release of milk. A pigmented area called areola lies below it.

Complete answer: Alveoli of mammary gland produce milk which is stored in the lumen of alveoli. It opens first in mammary tubules and then into mammary ducts.
Secretion of storage of milk generally begins after birth of young ones, usually under 24 hours. Prolactin is secreted by anterior lobe of pituitary gland while Oxytocin secreted by posterior lobe of pituitary gland.
Oxytocin produces in response to stretching of the cervix before and during labour and stimulation of breastfeeding. Oxytocin stimulates ejection of milk from the alveoli into the ducts.
Prolactin hormone responsible for the milk formation in alveoli of mammary gland. It is secreted during the birth of a child.

So the correct answer is ‘Prolactin and Oxytocin respectively’

Note: Vasopressin hormone is an antidiuretic hormone secreted by posterior lobe of pituitary gland. Vasopressin regulated the concentration of body fluids. It is a peptide hormone.
It also helps to control blood pressure by acting on the kidney and the vessels.