Basic Embryology

Question 1

When does hCG begin to get secreted

Answer 1

About 6-7 days after fertilization

Question 2

At what week do 2 sacs form (the amniotic sac and yolk sac)

Answer 2

Week 2

Question 3

At what week do you get a 3 layered embryo

Answer 3

Week 3

Question 4

What is the 3-layered embryo in week 3

Answer 4

Endoderm
Ectoderm
Mesoderm

Question 5

At what week will the spinal cord and brain begin to form

Answer 5

Week 3

Question 6

Name the week of development

Heart begins to beat and neural tube has closed

Answer 6

Week 4

Question 7

At what week does the body begin to take shape

Answer 7

Week 4

Question 8

Name the week of development

Organogenesis

Answer 8

Week 5-8

Question 9

At what weeks is the fetus the most susceptible of the development to tetrogens

Answer 9

Week 5-8

Question 10

At what weeks is the baby considered viable

Answer 10

24 weeks

Question 11

What cells make up the placenta

Answer 11

Both fetal and maternal cells

Question 12

What does the placenta form that will circulate the fetal blood

Answer 12

Chorionic villi

Question 13

When is the development of the placenta complete

Answer 13

12 weeks

Question 14

When does the b-hCG levels peak at

Answer 14

8-10 weeks

Question 15

What do you want to suspect if the b-HCG is abnormally low

Answer 15

Ectopic or threatened abortion

Question 16

What do you want to suspect if the b-hCG is abnormally high

Answer 16

Trophoblastic disease

Question 17

What hormones does the placenta secrete

Answer 17

Estrogen 
Progesterone 
Human placental lactogen 
Corticotroponin-releasing hormone 
b-hCG

Question 18

What hormone does the following:
Stimulates growth of uterus and breast tissue
Causes relaxation of ligaments including the SI joint

Answer 18

Estrogen

Question 19

What hormone does the following;
Maintains the endometrial lining
Prevents preterm labor by decreasing myometrial contractility

Answer 19

Progesterone

Question 20

What hormone does the following;
Stimulates the growth of mammory glands
Decreased maternal insulin sensitivity
Thought to play a role in gestational diabetes

Answer 20

Human placental lactogen

Question 21

Name the hormone that does the following;

Plays a role in onset of labor, both term and preterm

Answer 21

Corticotropin-releasing hormone

Question 22

What makes up the umbilical cord

Answer 22

2 arteries and 1 vein