Fetal Growth And Development

Question 1

Gestational age

Usually how many weeks before ovulation and fertilization?

Answer 1

2 weeks

Question 2

Gestational age

How many weeks before blastocyst implantation

Answer 2

3 weeks

Question 3

Embryologist describe embryo fetal development using this or the time in days or weeks from ovulation.

Answer 3

Ovulation age

Question 4

Nearly identical to ovulation age

Answer 4

Postconceptional age

Question 5

Between first day of LMP and the birth

Answer 5

289 days or 40 weeks

9 and 1/3 calendar months

Question 6

Quick estimate of EDC

Answer 6

Naegele rule

Question 7

Zygote and blastocyst development

How many weeks after ovulation?

Answer 7

First 2 weeks

Question 8

Zygote and blastocyst development

Implantation, how many days before fertilization?

Answer 8

6-7 days

Question 9

Zygote and blastocyst development

How many embryo producing cells (inner cell mass)

Answer 9

5 embryo

Question 10

Zygote and blastocyst development

How many cell from the placental trophoblast?

Answer 10

53 cells

Question 11

Embryonic period

Answer 11

3 rd week after ovulation and fertilization

Question 12

Embryonic period

Formation of what? That coincides with the expected day of menses

Answer 12

Primitive chorionic villi

Question 13

Embryonic period

Last how many weeks

Answer 13

8 weeks

Question 14

Embryonic period

Takes place

Answer 14

Organogenesis

Question 15

3rd week

Answer 15

Positive pregnancy test ( 35 days or 5th week)
Embryonic disc
Body stalk
1cm chorionic sac
Fetal blood vessel in chorionic villi

Question 16

4th week

Answer 16

CVS
True circulation ( chorionic villi and embryo )
Chorionic sac 2-3 cm
Arm and leg bud
Amnion

Question 17

6th week

Answer 17

22-24 cm in lenght
Head> trunk
Heart is complete
Finger and toes 
Arms bend at the elbows
Lip and ears

Question 18

Fetal period

Answer 18

8 weeks after fertilization
10 weeks after LMP
Embryo 4cm long
CRL

Question 19

Correspond to the sitting height are most accurate for dating.

Answer 19

Crown to rump lenght

Question 20

12 gestational weeks

Answer 20

Uterus in symphisis pubis
CRL 6-7 cm
Center of ossification
Differentiate finger and toes
Skin and nails
Fetal movt
Beginning to show gender

Question 21

16 gestational weeks

Answer 21

CRL 12cm
110 g
14 weeks - determined gender
16-18 weeks- eye movement 
Uterus- between symphisis pubis and umbilicus
Midbrain

Question 22

20 gestational weeks

Answer 22

Midpoint
Fetus move every minute
\+quickening
Fetal skin less transparent
Downy lanugo
Scalp hair is developed

Question 23

Cochlear function develops between

Answer 23

22-25 weeks and maturation continues 6 months after delivery

Question 24

24 gestational weeks

Answer 24

Wt. 630 g
Fat deposit begin
Large head 
Eyebrow and eyelashes
Canalicular period of lung nearly  completed

Question 25

24 weeks fetus born this time will attempt to breathe but most will die because

Answer 25

Terminal sacs have not yet formed

Question 26

28 gestational weeks

Answer 26

``` CRL - 25 cm 1100 g Vernix caseosa Disappeared pupillary membrane Blinking 90% of survival if born ```

Question 27

32 gestational weeks

Answer 27

CRL- 28 cm 1900 g Skin is still red and wrinkled

Question 28

36 gestational weeks

Answer 28

CRL - 32cm 2500 g Subcutaneous fat deposition Lost of wrinkled face

Question 29

40 gestational weeks

Answer 29

``` Term Fetus is fully developed CRL - 36 cm 3400g 2500 most Filipinos ``` Full termed is (37-42 weeks)2

Question 30

Placental physiology and fetal growth Fetal blood contained in the? Maternal blood remains in the?

Answer 30

Fetal capillaries of chorionic villi Intervillous space No direct communication between them

Question 31

Placental physiology and fetal growth Bidirectional transfer depends on the processes that permit or aid the transport through the

Answer 31

Syncytiotrophoblast that line the chorionic villi

Question 32

Placental physiology and fetal growth There are occasional breaks in the chorionic villi which permit escape of fetal cells into the maternal circulation

Answer 32

- women by + fetus Chimerism Maternal autoimmune diseases

Question 33

Maternal blood within this space is the primary unit of maternal- fetal transfer

Answer 33

Intervillous space

Question 34

Function together as the fetal lung GIT and kidney

Answer 34

Chorionic villi | Intervillous space

Question 35

Placental physiology and fetal growth Utero placental BF near term is

Answer 35

700-900 ml/min

Question 36

Reduce blood flow into the Intervillous space with the degree depending on the contraction intensity

Answer 36

Active labor contraction

Question 37

Regulate maternal and fetal blood flow

Answer 37

Syncytiotrophoblast

Question 38

Maternal facing syncytiotrophoblast surface is char theorized by

Answer 38

Complex micro villus structure

Question 39

Fetal facing basal cell membrane is the site for transport from the

Answer 39

Intravillous space into fetal blood

Question 40

Most substance with mass

Answer 40

Simple diffusion like | O2, CO2, water, most electrolytes and anesthetic gases

Question 41

Cross the placenta but very slow

Answer 41

Insulin Steroid hormones Thyroid hormones

Question 42

Hormones synthesized in situ in the trophoblasts enter both the

Answer 42

Maternal and fetal circulation but not equally

Question 43

Transferred by way of a specific trophoblast receptor mediated mechanism

Answer 43

IgG

Question 44

Gestational age Also called

Answer 44

Menstrual age