In the secretory phase, the functional layer of the endometrium is thickened by the actions of estrogen and progesterone to prepare for embryo implantation. However, if embryo implantation does not occur, the functional layer of the endometrium detaches, and menstruation begins.
Answers & Comments
Answer:
In the secretory phase, the functional layer of the endometrium is thickened by the actions of estrogen and progesterone to prepare for embryo implantation. However, if embryo implantation does not occur, the functional layer of the endometrium detaches, and menstruation begins.