General Embryology - Detailed Animation On Embryonic Folding

Animation is derived from Primal Anatomy & Physiology Online Course. You may purchase the course at Embryonic folding is the process of converting the embryo from a flat disc, into a cylinder. This cylinder consists of three main layers, derived from the trilaminar embryonic disc: the endoderm in the center, the ectoderm on the outside, and the mesoderm, which is found between the two layers. During the fourth week of development, folding of the embryo occurs as a resu