Fetal Development

Question 1

Hemopoiesis =

Answer 1

at week 6

Question 2

Fetal Heart Rate =

Answer 2

starts at week 3

Question 3

2 Heart Chambers =

Answer 3

at 3-4 weeks

Question 4

4 Heart Chambers =

Answer 4

at 4-6 weeks

Question 5

Veins =

Answer 5

gives O2 and nutrients

Question 6

Artery =

Answer 6

helps excrete toxins

Question 7

How many umbilical arteries?

Answer 7

2

Question 8

How many umbilical veins?

Answer 8

1

Question 9

When do most women find out they are pregnant?

Answer 9

at 4-6 weeks

Question 10

When can you see FHR on the monitor?

Answer 10

at 5 1/2 to 6 weeks after gestation

Question 11

Ovulation =

Answer 11

14 days before period
ex: LMP on 28th minus 14 days = 14th of the month was when ovulation was

Question 12

What weeks fall under the embryonic stage?

Answer 12

3 week
4 week
5 week
8 week

Question 13

What weeks fall under fetal stage?

Answer 13

9 week
12 week
16 week
20 week
24 week
28 week
32 week
36 week
40 week

Question 14

heart starts beating and blood circulates

Answer 14

3 weeks

Question 15

2 chambers form; a 4 chamber heart
respiratory system begins

Answer 15

4 weeks

Question 16

umbilical cord developed

Answer 16

5 weeks

Question 17

gender distinguished

Answer 17

8 weeks

Question 18

finger, toes, eyelids, and jaw evident

Answer 18

9 weeks

Question 19

placenta complete
organ system complete
thumb sucking
fetus voids in amniotic fluid (11 wks)

Answer 19

12 weeks

Question 20

meconium in bowel

Answer 20

16 weeks

Question 21

hearing developed
quickening (mom feels FM)
lanugo covers the body
wake/sleep cycle evident

Answer 21

20 weeks

Question 22

circulation visible
rapid brain growth
hiccups
vernix caseosa = thick
lecithin (L) present

Answer 22

24 weeks

Question 23

eyes open and close
process site and sound
taste buds developed
hair on head

Answer 23

28 weeks

Question 24

fingernails, toenails, and fingerprints evident
SubQ fat develops
vigorous FM
L/S ratio = 1:2:1 (lung maturity = 2:1)

Answer 24

32 weeks

Question 25

lanugo disappearing amniotic fluid decreases L/S ratio = 2:1

Answer 25

36 weeks

Question 26

fetal development complete!

Answer 26

40 weeks

Question 27

allows most oxygenated blood go to brain

Answer 27

shunts

Question 28

shunts around the liver... placenta does the work of the liver for the fetus. shunts blood around the liver

Answer 28

Ductus Venous

Question 29

right to left shunt... blood transfers from right atrium thru this to the left atrium. allows blood to flow directly from the R to L atrium

Answer 29

Foramen Ovale

Question 30

shunts blood around lungs... just enough to keep viable! create a circulatory pathway bypassing the lungs.

Answer 30

Ductus Arteriosus

Question 31

circulatory system =

Answer 31

1st system to develop because the fetal lungs do not function for respiratory gas exchange, a special circulatory pathway is necessary

Question 32

before birth...

Answer 32

O2 taken to and from placenta

Question 33

after birth...

Answer 33

placenta is cut off and O2 transferred normally through body

Question 34

Fetal circulation allows the highest level of ______ and _________ not head, neck, and arms which enhance the ______________________ (head --> rump) development of the embryo/fetus

Answer 34

O2 nutrients cephalocaudal

Question 35

substance/exposure causing abnormal development; results in structural or functional disabilities

Answer 35

Teratogens

Question 36

What are some examples of teratogens?

Answer 36

1. androgens 2. angiotensin converting enzyme 3. cig. smoke 4. cocaine 5. coumarin 6. cytomegalovirus 7. diethylstilbestrol 8. ethanol ( > 1 drink/day) 9. iodides 10. lead 11. lithium 12. mercury 13. parvovirus 14. phenytoin 15. rubella 16. syphilis 17. tetracycline 18. thalidomide 19. toxoplasmosis 20. valolporic acid 21. varicella 22. zika

Question 37

________________ secrete ________ to make sure that the corpus luteum remains viable.

Answer 37

Blastocyst HCG

Question 38

corpus luteum secretes _______ and _________ the first _________ months of pregnancy.

Answer 38

estrogen progesterone 2-3

Question 39

1st week of human development =

Answer 39

transport of embryo down uterine tube and into uterus

Question 40

____________ ___________ replication (cleavage) occurs as baby (zygote) is propelled towards the ________.

Answer 40

Mitotic Cellular Uterus

Question 41

morula =

Answer 41

16 cells

Question 42

trophoblast =

Answer 42

outer layer of cells

Question 43

blastocyst =

Answer 43

inner layer of cells -- baby

Question 44

ovum =

Answer 44

conception --> 14 days

Question 45

embryo =

Answer 45

day 15 --> 8 weeks (organ forming & greatest vulnerability)

Question 46

fetus =

Answer 46

8 weeks --> birth

Question 47

surrounds the fetus in womb and protects fetus from injury and temperature change, permits musculoskeletal development

Answer 47

amniotic fluid

Question 48

structure containing blood vessels and attach fetus to the placenta during gestation

Answer 48

umbilical cord

Question 49

organ nourishing and maintaining the fetus through the umbilical cord

Answer 49

placenta

Question 50

a test of fetal amniotic fluid to assess for fetal Lum immaturity

Answer 50

surfactant L/S ratio

Question 51

a greasy deposit covering the skin of a baby @ birth

Answer 51

Vernix

Question 52

a pasty covering of dead cells and sebaceous secretions that protect the skin of the fetus

Answer 52

Caseosa

Question 53

fine, soft hair covers body and limbs of a fetus

Answer 53

Lanugo