The principal hormone in promoting milk production is
A)oxytocin
B)estrogen
C)progesterone
D)colostrum
E)prolactin

Question

Quizplus · Accepted Answer

Prolactin is the principal hormone responsible for promoting milk production. It is secreted by the pituitary gland and stimulates the mammary glands to produce milk. Oxytocin is also involved in milk production as it causes the milk let-down reflex, but it is not the principal hormone. Estrogen and progesterone are involved in the growth and development of the mammary glands during pregnancy, but their levels decrease after childbirth to allow prolactin to take over. Colostrum is not a hormone but rather the first milk produced by the mammary glands, which is rich in antibodies and important for the baby's immune system.

The Principal Hormone in Promoting Milk Production Is