What happens 3-4 days after fertilization?

C

What stage happens 6 days after fertilization?

E

Which structure was formerly called the blastocyst cavity?

F

This is composed of the syncytiotrophoblast and the cytotrophoblast. (makes up the chorion)

C

Where is the amniotic cavity?

E

Which cells are derived from the yolk sac and form a connective tissue layer?

B

What is line "G" pointing to?

None of these choices (extraembryonic coelem)

What is line "A" pointing to?

Trophoblast

Which represents the morula stage?

C

Which one represents the blastocyst stage?

E

What does figure "A" represent?

Cleave of zygote

What is like "G" pointing to in this figure?

Chorionic villi

Where are the fetal blood vessels in the figure?

E

What is line "F" pointing to in the figure?

maternal endometrial arteriole