The attached video gives information regarding the process of implantation. It explains how the blastocyst burrows into the endometrium and establishes a connection with the mother as well as the initiating process of placenta. 0:00 Review 2:13 Initiation of Implantation & Attachment of Blastocyst to Endometrium 4:02 Burrowing of Blastocyst 4:25 Initiation of Placenta Formation 4:51 Chorion, Amnion and Umbilical Vesicle 5:36 Rebuilding of Endometrium 6:14 Direct Connection and Embryonic Stalk is Formed