Fetal and Neonatal Physio Cobine Flashcards Preview

Block 3 Week 8 > Fetal and Neonatal Physio Cobine > Flashcards

Flashcards in Fetal and Neonatal Physio Cobine Deck (115)
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1

HOw big is the baby during the first few weeks of life?

microscopic

2

How long does the babies weight remain minuscule?

for 12 weeks (then begins to grow)

3

When do we have the most weight gain in the growth of the baby?

last 2 months (2lbs pre month)

4

How do embryos grow in length?

steadily throughout gestation

5

What is considered the critical period of embryonic development?

the first trimester

6

When do organ systems form?

within the 2nd and 3rd month and are complete at 4th month (organs will looks the same as they will at birth from this point on)

7

How does cellular development progress?

continues during rest of gestational period

8

What systems are not fully developed at birth?

nervous system, kidneys, and liver

9

During the first 2 weeks of fetal development, what should you be worried about?

abortion

10

During the embryonic period (week 3 - week 8), what should you be worried about?

severe morphological anomalies

11

During the fetal period, week 9 and on, what should you be worried about?

functional defects and minor morphological anomalies

12

When does the heart start beating and how fast does the heart beat?

26 days (65 beast/minute)
heart rate increase with growth to 140 beats/minutes just before delivery

13

When and how does the fetus create NUCLEATED RBCs?

yolk sac and mesothelial layer of the placenta make these at the 3rd week of development

14

When and how does the fetus create NON-Nucleated RBCs?

form in liver and spleen at 4-6 weeks

15

When and how does the fetus create red and white blood cells?

from bone marrow in the 3rd or 4th month

16

After birth where does the fetus get its blood cells?

just from the bone marrrow

17

Overall, explain how the progression of fetal blood

Yolk sac-> liver-> spleen-> bone marrow
(young liver synthesizes blood)

18

When do respiratory movement take place in embryonic development?

during 1st trimester

19

What is inhibited during the last three months of embryonic development?

respiratory movements

20

What is the point of the suppression of respiratory movements in the fetus in the last 3 to 4 months of embryonic development?

to prevent debris from meconium (the dark green substance forming the first feces of a newborn infant) from entering the lungs

21

Why are their fluids secreted by the alveolar epithelium in embryological development?

to keep airways clean

22

Explain the development of the nervous system

3-4 months skin reflexes develop
1 yr -> myelinization of major tract of nervous system
Increasing brain mass -> 26% at birth-> 55% 1 year-> 80% at 2 years

23

Most of the higher function of the (blank) are underdeveloped at birth.

cerebral cortex

24

After (blank) months of gestation, fetus ingests and absorbs large quantities of amniotic fluid

4.5 months

25

During the last (blank), GI function approximates that of a newborn infant.

2-3 months of gestation

26

What is excreted by the fetus after 2-3 months of gestation?

meconium (feces)

27

When do fetal kidneys start developing?

at the 5th week

28

Kidneys begin excreting urine during what period of time?

1st and 2nd trimesters

29

Extracellular fluid electrolyte regulation and acid-base balance only begins after blank) months and isn't fully developed until (blank).

4.5 months
months after birth

30

Is there a lot of calcium and phosphorous absorption in the fetus?

yes about 23g of Ca and 14g of phosphorus which is mostly absorbed in the last month of gestation.
(i.e calcium total is about 1/50th of the maternal bone content)