Week 3 Flashcards
1
Q
What are the five stages (in order) of Feotal Lung development
A
- Embryonic
- Pseudoglandular
- Canalicular
- Saccular
- Alveolar
2
Q
In what stage of Lung development are the major lung branches established ?
A
Embryonic
3
Q
In what stage are all generations of airway formed ?
A
Pseudoglandular phase
4
Q
In what stage of lung development pulmonary artery and veins established ?
A
Pseudoglandular
5
Q
In what stage of lung development is the Air-blood barrier established ?
A
Canalicular
6
Q
List two anatomical differences in infant chest walls
A
- Ribs are more horizontal
2. Chest wall is too compliant
7
Q
Why does ventilation in infants preferably move to upper regions?
A
- Chest wall compliance
2. Lung weight
8
Q
How does infant and adult pleural pressure differ ?
A
- infants are closer to atmospheric pressure
