The two most prominent hormones active in breast physiology are (responsible for ductal proliferation) and (responsible for lobular proliferation and growth).

The two most prominent hormones active in breast physiology are ESTROGEN (responsible for ductal proliferation) and PROGESTERONE (responsible for lobular proliferation and growth).

Explanation:

The breast is a specialised mammalian organ anatomically made up of ducts and lobules which are more developed in female than in male. It's primary function is for lactation( that is, milk production) for infants. Before and during lactation periods, some physiological changes occurs which is as a result of various hormonal activities. These hormones includes:

- ESTROGEN: this is responsible for proliferation of the ducts and

- PROGESTERONE: this is responsible for lobular proliferation and growth.