What function does the trophoblast serve during early pregnancy?

The trophoblast plays a crucial role in early pregnancy by providing nutrition and support for the developing embryo. This outer layer of the blastocyst is responsible for the implantation of the embryo into the uterine lining, which is essential for establishing a successful pregnancy. Once attached, the trophoblast starts to form the placenta, which will later supply oxygen and nutrients to the fetus while also removing waste products.

Additionally, the trophoblast secretes hormones, such as human chorionic gonadotropin (hCG), that help maintain the early stages of pregnancy. Through these actions, the trophoblast ensures that the embryo receives the necessary sustenance and protection during these critical early weeks of development, contributing significantly to the health and viability of the pregnancy.