Prior to the Onset of Lactation, the Mammary Glands Are

Question

Prior to the onset of lactation, the mammary glands are prepared for the production of milk by
A) the hormonal action of estrogen and progesterone.
B) the completion of ovulation.
C) degeneration of the corpus luteum.
D) deactivation of FSH, LH, and GnRH.
E) synthesis of FSH.

Accepted Answer

Estrogen and progesterone are responsible for the development and preparation of the mammary glands for milk production before lactation begins.