What is another word for hypoblast?
Pronunciation: [hˌa͡ɪpə͡ʊblˈast] (IPA) 
The word "hypoblast" refers to the inner cell mass of a blastocyst, which eventually forms the endoderm. Some synonyms for hypoblast include yolk sac endoderm, embryonic endoderm, and primitive endoderm. Additionally, the hypoblast can also be referred to as the lower layer, as it is located closer to the inner cell mass than the outer layer, or epiblast. Synonyms for epiblast include upper layer, embryonic ectoderm, and primitive ectoderm. The hypoblast and epiblast work together to form the three embryonic germ layers, which give rise to all the body's cell types and organs during development.
