Embryonic and Fetal Structure

Question 1

3 time periods of fetal development

Answer 1

1. Pre-embryonic (1st 2weeks, beginning of fertilization)
2. Embryonic (Weeks 3-8)
3. Fetal (Week 8 through birth)

Question 2

Union of an ovum and spermozoon

Answer 2

Fertilization

Question 3

Another term of Uterine Lining

Answer 3

Decidua

Question 4

What will happen to the Decidua during pregnancy/

Answer 4

It continues to grow on thickness and vascularity

Question 5

What does Placenta serves as?

Answer 5

Fetal lungs, kidneys and GI tract, and a separate endocrine organ throughout pregnancy

Question 6

Braxton Hicks Contraction

Answer 6

The “Practice” Contractions, warm-up exercise for labor and it also increase the placental perfusion.

Question 7

Position that mothers should do to life the uterus away from the inferior vena cava

Answer 7

Lying on her left side

Question 8

What will happen when the mother lies on her back?

Answer 8

The weight of the uterus compresses the vena cava.

Question 9

Responsibility of Syncytial (Outer) Layer of Chorionic Villi

Answer 9

it serves as source of oxygen and nutrients and develops a hormone-producing system

Question 10

Hormones produced in the Syncytial Layer

Answer 10

First hormone produced is the Human Chorionic Gonadotrophin (hCG)

Question 11

Purposes of hCG

Answer 11

• to ensure the corpus luteum of the ovary produces estrogen and progesterone
• suppresses the maternal immunologic response so that placental tissue is not rejected.

Question 12

Estrogen

Answer 12

• 2nd hormone produced, it contributes to the mother’s mammary gland for lactation
• it stimulates the growth of the uterine for the developing fetus

Question 13

Progesterone

Answer 13

the hormones of the mothers.

• to maintain the endometrial lining of the uterus
• preventing premature labor

Question 14

hPL (Human Placental Lactogen)

Answer 14

• a hormone w growth promoting and lactogenic (milk producing) properties

Question 15

Umbilical cord

Answer 15

connects the embryo to the chorionic villi of the placenta

Question 16

Function of Umbilical Cord

Answer 16

transports nutrients, and oxygen to the fetus from the placenta and to return waste products from the fetus to the placenta

Question 17

Bulk of the cord

Answer 17

Wharton’s Jelly

Question 18

What does the umbilical cord contains?

Answer 18

VAA = 1vein, and 2arteries

Question 19

The innermost layer of the placenta

Answer 19

Amniotic Membrane

Question 20

Reason why the amniotic fluid never becomes stagnant

Answer 20

fetus continually swallows the fluid.

Question 21

Oligohydramnios

Answer 21

• reduction in the amount of amniotic fluid that will result to a disturbance of fetal kidney function

Question 22

Functions of Amniotic Fluid

Answer 22

1. Shields the baby against pressure from the mothers abdomen
2. Protects fetus from changes in temp.
3. Protects umbilical cord from pressure
   Aids in fetal muscular development