Changes

#Hypoblast - facing towards the endometrium, adjacent to the blastocyst cavity.

#Hypoblast - facing towards the endometrium, adjacent to the blastocyst cavity.

#Amnioblasts - cells of the epiblast that migrate up and around to allow the amniotic cavity to form.  

#Amnioblasts - cells of the epiblast that migrate up and around to allow the amniotic cavity to form.  

*The '''epiblast''' gives rise to the three germ layers:

*After [[Developmental Biology - Gastrulation - Anatomy & Physiology|gastrulation]] the '''epiblast''' gives rise to the three germ layers:

#Ectoderm

#Ectoderm

#Mesoderm

#Mesoderm

#Endoderm

#Endoderm

*The hypoblast gives rise to no persisting structure in the adult.

*The hypoblast gives rise to no persisting structure in the adult.