ANATOMY - Cell mass divides into 2-inner and outer Outer cell - TopicsExpress



          

ANATOMY - Cell mass divides into 2-inner and outer Outer cell mass--- forms syncytiotrophoblast and cytotrophobalst Inner cell mass---- epiblast and hypoblast Hypoblast-- forms extra embryonic mesoderm ( splancho and somatopleuric layer developes) Also proliferates to form--- prochordal plate (mouth) Epiblast--- proliferate to form primitive streak-- anterior end primitive node and depression primitive pit Thn epiblast detaches enters this pit--- and replaces hypoblast by forming-- ENDODERM--1ST LAYER again epiblast enters pit forming-- intra embryonic mesoderm And at last replaces itslf to form ECTODERM --LAST LAYER
Posted on: Tue, 11 Mar 2014 16:25:29 +0000

Trending Topics



Recently Viewed Topics




© 2015