What hormone stimulates the secretory cells in the mammary gland to synthesize milk?

Question

Quizplus · Accepted Answer

Prolactin is the hormone responsible for stimulating the secretory cells in the mammary gland to synthesize milk. Estrogen and progesterone are involved in the development of the mammary gland, but do not directly stimulate milk production. Oxytocin is responsible for the release of milk from the mammary gland, but does not stimulate its synthesis.

What Hormone Stimulates the Secretory Cells in the Mammary Gland