Question

What is bilaminar germ disc? When and how it is formed? What changes take place in trophoblast during second week of development?

Answer 1

Answer:

i2bd8wn8ebei dia dud. duck off

Answer 2

In week 2 of implantation, the trophoblast penetrates deeper into the endometrium, and the blastocyst changes morphologically. The inner cell mass produces a bilaminar embryonic disk composed of epiblast (future embryonic ectoderm and mesoderm) and embryonic endoderm.