Fetal Development

Question 1

heart begins to beat (tubular) at what day?

Answer 1

28

Question 2

FHR is not detected until what weeks?

Answer 2

8-12

Question 3

4 weeks

Answer 3

heart begins to beat (tubular) at 28 days, although FHR not detected until 8-12 weeks

Question 4

C-shaped body with arms and leg buds well developed at what week?

Answer 4

5 weeks

Question 5

heart and brain show the most advanced development at what week?

Answer 5

5 weeks

Question 6

5 weeks?

Answer 6

C-shaped body with arm and leg buds well developed. Heart and brain show the most advanced development

Question 7

3 cm. (1 in.) long [crown to rump (C-R).

Answer 7

8 weeks

Question 8

Clearly resembles a human at what week?

Answer 8

8 weeks

Question 9

all body organs formed at what week?

Answer 9

8 weeks

Question 10

major divisions of the brain are distinct at what week?

Answer 10

8 weeks

Question 11

facial features discernible at what week?

Answer 11

8 weeks

Question 12

External genitals present but not discernible until what week?

Answer 12

12 weeks

Question 13

External genitals present but not discernible until 12 weeks?

Answer 13

8 weeks

Question 14

8 weeks

Answer 14

3 cm. (1 in.) long [crown to rump (C-R). Weight is ~2 grams. Clearly resembles a human. All body organs formed. Major divisions of the brain are distinct. Facial features discernible. external genitals present but not discernible until 12 weeks.

Question 15

weight is ~2 grams

Answer 15

8 weeks

Question 16

8 cm (3.2 in.) and 19-28 grams (

Answer 16

12 weeks

Question 17

heart can be seen on ultrasounds

Answer 17

12 weeks

Question 18

sucking movements begin and tooth buds present.

Answer 18

12 weeks

Question 19

well formed face and digits

Answer 19

12 weeks

Question 20

Gender is discernable

Answer 20

12 weeks

Question 21

kidneys produce urine

Answer 21

12 weeks

Question 22

12 weeks:

Answer 22

8 cm (3.2 in.) and 19-28 grams (

Question 23

rapid growth at what week?

Answer 23

16 weeks

Question 24

approximately 6 inches long at what week?

Answer 24

16 weeks

Question 25

spontaneous movements begin at what week?

Answer 25

16 weeks

Question 26

lanugo begins to develop at what week?

Answer 26

16 weeks

Question 27

meconium in bowel & anus patent at what week?

Answer 27

16 weeks

Question 28

16 weeks:

Answer 28

rapid growth-approximately 6 inches long. Spontaneous movements begin. Lanugo begins to develop. meconium in bowel-anus patent

Question 29

has almost doubled length in 4 weeks at what week number?

Answer 29

20 weeks

Question 30

19 cm (8 in.) and 200-400 grams (11-14 ounces) at what week?

Answer 30

20 weeks

Question 31

lanugo and vernix covers body

Answer 31

20 weeks

Question 32

nails on fingers and toes develop

Answer 32

20 weeks

Question 33

hands can grasp

Answer 33

20 weeks

Question 34

Quickening felt by Mom

Answer 34

20 weeks

Question 35

has hair on head, eyebrows, and eyelashes

Answer 35

20 weeks

Question 36

20 weeks

Answer 36

has almost doubled length in 4 weeks. 19 cm (8 in.) and 200-400 grams (11-14 ounces). Lanugo and vernix covers body. Nails on fingers and toes develop. Hands can grasp. Quickening felt by Mom. Has hair on head, eyebrows, and eyelashes

Question 37

28 cm (11 in) crown to heal (C-H) length and 780 gm (1 lb 10 oz)

Answer 37

24 weeks

Question 38

skin red and wrinkled; sweat glands developing

Answer 38

24 weeks

Question 39

reflexes present (Grasp-Moro)

Answer 39

24 weeks

Question 40

respiratory movements visible

Answer 40

24 weeks

Question 41

may survive in ICU from what week?

Answer 41

24 weeks

Question 42

24 weeks:

Answer 42

28 cm (11 in) crown to heal (C-H) length and 780 gm (1 lb 10 oz). skin red and wrinkled; sweat glands developing. reflexes present (grasp-moro). Respiratory movements visible. May survive in ICU from 24 weeks on.

Question 43

35-38 cm (14-15 in.) and 1100 grams (2 1/2 pounds)

Answer 43

28 weeks

Question 44

eye is structurally complete and able to open

Answer 44

28 weeks

Question 45

gas exchange in lungs

Answer 45

28 weeks

Question 46

surfactant forming

Answer 46

28 weeks

Question 47

testes descend close to scrotum

Answer 47

28 weeks

Question 48

28 weeks

Answer 48

35-38 cm (14-15 in.) and 1100 grams (2 1/2 pounds). Eye is structurally complete and able to open. Gas exchange in lungs (surfactant forming). Testes descend close to scrotum.

Question 49

38-43 cm (15-17 in.) and 1800-2200 grams (4-5 pounds).

Answer 49

32 weeks

Question 50

rhythmic breathing

Answer 50

32 weeks

Question 51

bones fully developed

Answer 51

32 weeks

Question 52

brown fat deposits

Answer 52

32 weeks

Question 53

infant can store iron, calcium, and phosphorous

Answer 53

32 weeks

Question 54

less red and wrinkled at this week

Answer 54

32 weeks

Question 55

32 weeks

Answer 55

38-43 cm (15-17 in.) and 1800-2200 grams (4-5 pounds). Rhythmic breathing. Bones fully developed. Brown fat deposits. Stores iron, calcium, and phosphorous, less red and wrinkled

Question 56

greater than or equal to 3200 grams (greater than or equal to 7 pounds)

Answer 56

36 weeks

Question 57

lanugo disappearing

Answer 57

36 weeks

Question 58

occupies entire uterus

Answer 58

36 weeks

Question 59

good chance survival L/S (lecithin/sphingomyelin) ratio 2:1 (35 weeks).

Answer 59

36 weeks

Question 60

36 weeks

Answer 60

greater than or equal to 3200 grams (greater than or equal to 7 pounds). Lanugo disappearing. Occupies entire uterus. Good chance survival L/S (lecithin/sphingomyelin) ratio 2:1 (35 weeks).