Embryo - 2nd Week of Development

1. The amniotic cavity develops within the?

a.     Cytotrophoblast

b.     Hypoblast

c.     Syncytiotrophoblast

d.     Epiblast

e.     Zona pellucida

2. The primitive yolk sac originates from the?

a.     Cytotrophoblast

b.     Syncytiotrophoblast

c.     Hypoblast

d.     Epiblast

e.     Amniotic wall

3. The primitive streak develops in the?

a.     Cytotrophoblast

b.     Amniotic ectoderm

c.     Yolk sac

d.     Embryonic epiblast

e.     Syncytiotrophoblast

4. Conjoined are most likely to occur in twins which are?

a.     Monozygotic and diamniotic

b.     Monozygotic and dichorionic

c.     Monozygotic, dichorionic and diamniotic

d.     Monozygotic, monochorionic and diamniotic

e.     Monozygotic, monochorionic and monoanionic

CHECK ANSWERS

1. D

2. C

3. D

4. E