Prenatal Vocab: Week 2

Question 1

The embryoblast differentiates into the

Answer 1

ventral hypoblast and dorsal epiblast

Question 2

The bilaminar embryonic disc

Answer 2

composed of the hypoblast and epiblast

Question 3

Amniotic cavity is associated with the

Answer 3

dorsal epiblast

Question 4

the yolk sack is associated with the

Answer 4

ventral hypoblast

Question 5

Prochordal plate? what?

Answer 5

site of epiblast/hypoblast fusion, where mouth develops

Question 6

How do the embryonic layers develop?

Answer 6

The syncytiotrophoblast grows as the cytotrophoblast mitotically divides

Question 7

the layers of the chorion include

Answer 7

the extraembryonic somatic mesoderm; the cytotrophoblast and the syncytiotrophoblast

Question 8

What grows into the endometrium to make contact with maternal blood vessels?

Answer 8

the syncytiotrophoblast

Question 9

Extraembryonic Mesoderm

Answer 9

The visceral mesoderm: splanchnopleuric mesoderm

the somatic mesoderm: somatopleuric mesoderm

Question 10

the splanchnopleuric mesoderm

Answer 10

is the visceral mesoderm; covers the yolk sack

Question 11

the somatopleuric mesoderm

Answer 11

covers the cytotrophoblast

Question 12

hCG is detectable in the human blood and urine….

Answer 12

8 days and 10 days