Lungs & Digestive system
13 important questions on Lungs & Digestive system
What does the arising of the respiratory diverticulum (bud) depend on?
- TBX4
What are cartilage, muscle and connective tissue derived from?
What separates the trachea and lung buds from the esophagus?
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What are the five stages of the development of the lungs?
2. Pseudoglandular period
3. Canalicular
4. Saccular
5. Alveolar
What are the bronchial buds, that develop in the embryonic and pseudoglandular phase?
Where do the bronchial buds expand?
In the pseudoglandular phase, the lungs have cubic epithelial cells. How are they called?
What are the most important things that happen in the canalicular phase (until week 28)?
- Canaliculi compose the proper respiratory part of the lungs (pulmonary parynchema).
What are the most important things that develop in the saccular phase?
- Development of gas-exchange
- Type II cells produce surfactant
What happens in the alveolar phase?
- Alveoli are mature
- Terminal sacs continue to form (mature age 10)
What is the problem with many premature infants?
What happens to the amniotic fluids in the lungs, when the child is born?
How can the lung maturity be measured?
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