Second Week of Development - An Overview

This short video will be very helpful to give an idea of what changes occur in the second week of development. It briefly describes the process of implantation, formation of bilaminar disc and the uteroplacental circulation. 0:00 Implantation 0:13 Cytotrophoblast and Syncytiotrophoblast 0:45 Bilaminar Disc and Amnion Formation 1:10 Exocoelomic Membrane & Primitive Yolk Sac 1:30 Establishment of Uteroplacental Circulation 2:45 Chorionic Cavity 3:10 Secondary Yolk Sac & Connecting Stalk