This preview shows pages 1–2. Sign up to view the full content.
This preview has intentionally blurred sections. Sign up to view the full version.View Full Document
Unformatted text preview: at an early stage of embryonic development , consisting of approximately 12-32 cells (called blastomeres ) in a solid ball contained within the zona pellucida . Embryoblast/ Inner cell mass - inner cell mass (abbreviated ICM and also known as the embryoblast or pluriblast (the latter term being applicable to all mammals)) is the mass of cells inside the primordial embryo that will eventually give rise to the definitive structures of the fetus. Trophoblast - are cells forming the outer layer of a blastocyst , which provide nutrients to the embryo and develop into a large part of the placenta . Outer cell mass - Blastocyst & cavity Syncytial cavity Human chorionic gonadotropin - peptide hormone produced in pregnancy that is made by the embryo soon after conception and later by the syncytiotrophoblast (part of the placenta )...
View Full Document