Growth and Development

Question 1

Size 2-3 wks post fertilization:

Answer 1

fetus is microscopic in size

Question 2

12 wks:

Answer 2

10 cm long

Question 3

20 wks:

Answer 3

25 cm long

Question 4

Term (40 wks):

Answer 4

53 cm (21 in)

Question 5

Weight reaches__pound at 5.5 months

Answer 5

1

Question 6

Weight reaches @ 7 months:

Answer 6

3 lbs

Question 7

Weight reaches @ 8 months:

Answer 7

4.5 lbs

Question 8

weight @ Term:

Answer 8

7 lbs

Question 9

Mother typically gains ____due to increased blood volume,

in size of fetus, placenta

Answer 9

11 kg

Question 10

Heart begins beating at______gestation; average heart rate: ___ bpm

Answer 10

4 weeks, 65 bpm

Question 11

Close to term HR

Answer 11

140 bpm

Question 12

Cardiac output is constant from ______ bpm

Answer 12

120-180 bpm

Question 13

Surfactant production between ____ weeks

Answer 13

23/24

Question 14

__-___ mmHg pressure is needed to open airways

Answer 14

25-40

Question 15

How is liver metabolism effect in fetus?

Answer 15

decreased

Question 16

where does the fetal spinal cord end?

Answer 16

L3

Question 17

Fetal smaller air ways put them at high risk for?

Answer 17

obstruction

Question 18

How are lung compliance and FRC of a fetus?

Answer 18

Decreased

Question 19

_______ closing capacity

Answer 19

increased

Question 20

The large tongue of a fetus puts them at high risk for?

Answer 20

Obstruction

Question 21

HR

Answer 21

100-180 bpm

Question 22

cardiac output depends on ________.

Answer 22

heart rate

Question 23

Normal pco2

Answer 23

40-45 mmHg

Question 24

Normal Po2

Answer 24

30mmHg (fetal blood leaving placenta)

Question 25

Why are fetus' at risk for hypothermia? how is heat produced? what temp should the room be maintained ate?

Answer 25

no shivering mechanism, produce heat by burning brown fat. room at 26 degrees C

Question 26

RBCs: | 3rd wk

Answer 26

Nucleated RBCs formed in yolk sac and | mesothelium of placenta

Question 27

RBCs 4 wks:

Answer 27

Non-nucleated RBCs from by fetal mesenchymal and endothelial cells.

Question 28

RBCs 6 wks:

Answer 28

liver forms blood cells

Question 29

RBCs 12 wks:

Answer 29

spleen and lymphoid tissue, also bone marrow: red and white blood cells, other structures lose ability to form blood cells