The fluid-filled sac surrounding the developing human organism is the

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The fluid-filled sac that surrounds the developing human organism is called the amniotic sac. It acts as a protective cushion and helps maintain a stable temperature for the developing embryo/fetus. The placenta is an organ that develops alongside the fetus and plays a vital role in exchanging nutrients, oxygen, and waste with the mother's blood. The trophoblast is a layer of cells that helps implant the developing embryo in the uterine lining. Blastocyst is an early stage in the development of the embryo, characterized by a hollow ball of cells.

The Fluid-Filled Sac Surrounding the Developing Human Organism Is the