small or compact enough to fit or be used on a desk: a desktop calendar. noun. 2. the surface of a desk.
Implantation: A circumvallate placenta is simply a 'accident of implantation and formation. Serendipity often causes some of the medical aberrations that are often seen. Causes of circumvallate placenta - What is a partial circumvallate placenta? What causes it? Implantation. A circumvallate placenta is simply a 'accident of implantation and formation. Serendipity often causes some of the medical aberrations that are often seen.
The fetal part of the placenta is known as the chorion. The maternal component of the placenta is known as the decidua basalis.  Oxygen and nutrients in the maternal blood in the intervillous spaces diffuse through the walls of the villi and enter the fetal capillaries.