Physiology General fc9337be a-receptor of estrogens are? A Membrane receptors in breast B Nuclear receptors in breast C Membrane receptors in ovaries D Nuclear receptors in ovaries High-Yield Explanation Ans. is 'b' i.e., Nuclear receptors in breast(Ref: Principles of medical physiologlt p. 777).Estrogen binds to nuclear receptors --> Estrogen receptors (ERs)