Newborn Child Flashcards Preview

BI0005 > Newborn Child > Flashcards

Flashcards in Newborn Child Deck (23):
1

Why are changes at birth required

In the foetus some organs are not fully functional, as a result some changes are required at birth to give fully functional organs

2

Describe foetal lungs

They are collapsed or partially filled

3

When is a lung surfactant produced by the foetus

At six months

4

Whilst in utero what, in terms of the respiratory system, is the foetus dependent on the mother for

Oxygen supply and removal of carbon dioxide

5

What happens to the respiratory system at birth

Oxygen supply ceases, carbon dioxide accumulates, the respiratory centre in the brain is stimulated

6

What does stimulation of the respiratory centre in a baby at birth result in

The baby drawing its first breath

7

What are 3 important things to note in terms of the baby's first breath

1. Unusually deep
2. Inflates the lungs
3. The surfactant prevents the collapse of alveoli

8

What is the respiration rate of a newborn baby

45 breaths per minute

9

Why are the adaptations in foetal circulation present

In order to counteract the lack of lung function and to incorporate the fact that the foetus receives blood from the mother

10

What is the function of the shunts in foetal circulation

To by-pass blood

11

What 3 shunts are present in the foetal circulatory system

One in the heart
One ensures blood from the mother by-passes the liver and goes straight to the heart.
One prevents too much blood going to the collapsed lung

12

Why do newborns dehydrate easily

They are not good at concentrating urine

13

What happens to renal function once a baby is born

Babies have sole responsibility for maintaining fluid balance and waste disposal. However this takes a few years to fully mature

14

What are the feature of the foetal GI tract

There is limited secretion of enzymes and hormones

15

What changes does this first milk cause in a newborn

Rapid increase in gut size and stimulation of digestive juices and motility

16

Why do newborns use fat and glycogen stores

Because it takes a few days to establish the necessary components of the GI tract

17

Describe the characteristics of the environment in the mother's uterus

Warm, moist and constant

18

Why can newborns lose heat easily

They have a large surface area relative to volume

19

What do babies have to help control heat changes

Brown adipose tissue

20

What is brown adipose tissue

Extra brown fat

21

How much brown adipose tissue are babies born with

200g
This makes it a high proportion of their body mass

22

What does brown adipose fat do

Generate heat

23

What is the advantage of babies being well vascularised

Heat generated by brown adipose tissue can be spread to the rest of the body