babe

Question 1

amnion forms = surrounds embryo and produces amniotic fluid (shock absorber and helps regulate fetal body temperature)

Answer 1

2nd to 4th week

Question 2

• brain development begins

Answer 2

2nd to 4th week

Question 3

• blood vessel formation begins

Answer 3

2nd to 4th week

Question 4

• heart forms and begins to beat

Answer 4

2nd to 4th week

Question 5

• limb buds develop

Answer 5

2nd to 4th week

Question 6

• organs develop

Answer 6

2nd to 4th week

Question 7

• brain development continues

Answer 7

5th to 8th week

Question 8

• limbs become more distinct and digits appear

Answer 8

5th to 8th week

Question 9

• nose develops and is flat

Answer 9

5th to 8th week

Question 10

• external genitals begin to differentiate

Answer 10

5th to 8th week

Question 11

the tail disappears

Answer 11

5th to 8th week

Question 12

the embryo has clearly human characteristics

Answer 12

5th to 8th week

Question 13

• Placenta forms

Answer 13

9th to 12th week

Question 14

At this point the head makes up half the length of the fetus body (brain develops faster than rest of body in beginning)

Answer 14

9th to 12th week

Question 15

• fetal length nearly doubles

Answer 15

9th to 12th week

Question 16

• Bone formation continues

Answer 16

9th to 12th week

Question 17

Upper limbs almost reach final relative length but lower limbs are not quite as well developed

Answer 17

9th to 12th week

Question 18

Gender is distinguishable

from genitals

Answer 18

9th to 12th week

Question 19

• Head is relatively smaller than rest of body

Answer 19

13th to 16th week

Question 20

• Lower limbs lengthen

Answer 20

13th to 16th week

Question 21

• Rapid development of body systems occur

Answer 21

13th to 16th week

Question 22

• Eyebrows and head hair are visible

Answer 22

17th to 20th week

Question 23

• growth slows but lower limbs continue to lengthen

Answer 23

17th to 20th week

Question 24

• fetal movements are commonly felt by mother

called quickening

Answer 24

17th to 20th week

Question 25

Head and body are much more proportional

Answer 25

21 to 29 weeks

Question 26

Testes begin to descend around week 28

Answer 26

21 to 29 weeks

Question 27

Many fetuses born prematurely during this period can survive if given intensive care because lungs have developed enough (but need help)

Answer 27

21 to 29 weeks

Question 28

Fetus assumes upside down position

Answer 28

30 to 38 weeks

Question 29

• growth slows as birth approaches

Answer 29

30 to 38 weeks