Chapter 4 Exam 1

Question 1

Cell Separate from epiblast- line outer layer of amniotic cavity

Answer 1

Amniblasts

Question 2

Space b/t the epiblast & the cytotrophoblast

Answer 2

Amniotic cavity

Question 3

Extaembryoniic somatic mesoderm & trophoblast become this

Answer 3

Chorion

Question 4

Break down of uterine endometrium for nutrients

Answer 4

Embryonic nutrition

Question 5

Top- layer- a columnar cell layer facing the cytotrophoblast

Answer 5

Eplayer

Question 6

Lining of the yolk sac consisting of hypoblast & exocoelomic membrane

Answer 6

Heuser’s membrane

Question 7

Also helps to maintain the corpus luteum in pregnancy

Answer 7

Human chorionic gonadotropin

Question 8

Lower layer- a cuboidal cell layer facing the blastocyst

Answer 8

Hypoblast

Question 9

Forms roof of the exocoelomic cavity, membrane, and mesoderm

Answer 9

Hypoblasts

Question 10

Syntrophoblasts grows surrounding the cytotrophoblast developing spaces called

Answer 10

Lacunae

Question 11

Fills lacunae on the 12th day

Answer 11

Maternal blood sinusis

Question 12

Inner surface of cytotrophoblast

Answer 12

Somatic mesoderm

Question 13

Outer surface of the yolk sac & amnion

Answer 13

Splanchnic mesoderm

Question 14

Area surrounding the cytotrophoblasts

Answer 14

Syntrophoblasts

Question 15

12th day of development when the maternal blood flows into the lacunae

Answer 15

Uteralplacental Circulation

Question 16

Cells from the hypoblast & exocoelomic membrane lines this primary vesicle

Answer 16

Yolk sac