Development of the respiratory system
Exploring the Development of the Respiratory System
Test your knowledge on the intricate process of respiratory system development with our comprehensive quiz! This quiz covers various stages of lung development, important terminologies, and critical differences between pulmonary conditions.
- Assess your understanding of lung lobes development.
- Learn about pulmonary agenesis and aplasia.
- Discover the stages of respiratory system development and the implications of tracheoesophageal fistula.
Lung development
Cranial lung lobes develops earlier/faster than caudal lung lobes
Caudal lung lobes develops earlier/faster than cranial lung lobes
Primary bronchus buds appear at the beginning of the fifth week of prenatal development
Some of the bronchial tree branching is made after birth
Caudal lung lobes develop slower than cranial lung lobes
Development of respiratory system
Ventral part of foregut develops into respiratory diverticulum
Dorsal part of foregut develops into respiratory diverticulum
Starts at about the forth week of prenatal life
Primary bronchus buds appears at the beginning of the fifth week of prenatal development
During the development the respiratory diverticulum is separated from foregut by tracheoesophageal septum
Cranial lung lobes develop earlier/faster than caudal
Dorsal ventricular position of alimentary and respiratory tract is because of mitogens (retinoids) concentration
Respiratory diverticulum starts to develop due to the influence of mesenchymal factors like FGFs
Pulmonary agenesis vs pulmonary aplasia
Pulmonary agenesis is because of a lack of bronchial tree
Pulmonary agenesis is because of a lack of bronchial parenchyma
Pulmonary agenesis is a result in lack of bronchi and lung
Pulmonary agenesis is often caused by EFE-10 gene mutation
Pulmonary aplasia is because of a lack of lung parenchyma
Pulmonary agenesis is often caused by FGF-10 gene mutation
Stages of respiratory system development
The respiration of fetus is possible during canalicular phase
Secondary septa is thinner than within the primary septa
The primary septa is thicker than secondary alveolar septa
The alveolar stage is the last stage
Alveolar stage begins at about 32 weeks of pregnancy
During the pseudoglandular stage the conducting portion of the lungs is fully developed
Alveolar stage finishes during the first years of prenatal life
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