Placentation in mammals is initiated by Cytotrophoblasts Syncytiotrophoblasts Cytotrophoblasts closest to the ICM Syncyttiotrophoblasts closest to the ICM Cell migration and specification is most closely related to FGF\'s WNT\'s TGF beta\'s Sonic Hedgehog Cilia move Nodal vesicular parcles Right to left Left to right anterior to posterior medial to lateral In mammals primary neurulation is responsible for All development within the cranial vault All development within the cranial vault up to the cervical vertebrae All development within the cranial vault up to the thorascic vertebrae Aur development within the cranial vault up to the sacral vertebrae Solution Question 12: Cytotrophoblastic cells closest to the ICM ( the inner cell mass) initiate the placentation in mammals..