How do trophoblast cells differentiate into cytotrophoblast and syncytiotrophoblast layers, and what is the significance of this differentiation?

Trophoblast cells differentiate into the embryoblast, forming the embryo.

Trophoblast cells differentiate into endometrial cells, contributing to menstruation.

Trophoblast cells divide and differentiate, with cytotrophoblasts forming the inner cellular layer and syncytiotrophoblasts forming the outer layer for implantation.

Trophoblast cells differentiate into decidual cells, aiding in nutrient absorption.