Mesoderm is formed from the migration of cells of …….through the primitive streak.
a) endoderm
b) ectoderm
c) epiblast
d) both a and b
Epiblast is future…….
a) endoderm
b) mesoderm
c) ectoderm
d) both b and c
Hypoblast is future…….
a) endoderm
b) mesoderm
c) ectoderm
d) both b and c
Pregnancy is usually established when …
a) fertilization occur
b) when blastocyst implants in endometerium
c) when morula formed
d) when neural tube formed
Which of the following extra-embryonic membrane provides a fluid environment for the developing embryo?
a) amnion
b) chorion
c) allantois
d) yolk sac
Which of the following extra-embryonic membrane is the first site of RBC formation?
a) amnion
b) chorion
c) allantois
d) yolk sac
