The respiratory system http web nchu edu twpwebindex
The respiratory system 陳建榮 http: //web. nchu. edu. tw/pweb/index 2. php? pid=75&menu=2
4 -week embryo Respiratory diverticulum: -4 -week embryo -4 th pharyngeal arch -Laryngotracheal groove喉氣管溝
Respiratory diverticulum tracheal bud 氣管芽 laryngotracheal tube喉氣管管 primary bronchial buds 原始支氣管芽 Tracheoesophageal fold fused esophagus and laryngotracheal tube
Pharynx 咽
咽下隆起 杓狀軟骨腫部 Laryngotracheal groove T-shape laryngeal inlet Hypopharyngeal eminence post. 1/3 portion of tongue and epiglottis
Development of trachea
Tracheal stenosis氣管狹窄
Trachea or esophagus -Stenosis -Atresia -Fistula Tracheal stenosis氣管狹窄 Laryngeal web喉網
Tracheoesophageal fistula 氣管食道瘻管
Esophageal atresia or fistula
Development of lung
Maturation of the lung: -Pseudoglandular period假腺體期 -6~ 16 weeks -Canalicular period管道化期 -16~26 weeks -Respiratory bronchioles, alveolar ducts appear -Terminal saccular period終囊期 -26 weeks ~ birth -Blood-air barrier, type I and II alveolar cells apear -Alveolar period肺泡期 -32 weeks ~ 8 years
Pseudoglandular period假腺體期
Canalicular period管道化期 Alveolar duct
Terminal saccular period終囊期
Alveolar period肺泡期
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