8.6 POJA-L410. Pseudoglandular - canalicular period of developing lung (1)

8.6 POJA-L411. Pseudoglandular - canalicular period of developing lung (2)

8.6 POJA-L412. Pseudoglandular - canalicular period of developing lung (3)

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​8.6  POJA-L410

Title: Pseudoglandular - canalicular period of developing lung (1) 

Description:
Stain Azan, human fetus. A future lung lobe with cross-sectioned larger bronchi (1) in close association with islets of future smaller bronchial tubes (*). Around the larger bronchi several cartilage structures (↓) are already present. Note that the mesenchyme around the tubes within the islets becomes more condensed.
Large blood vessels are recognizable (2). The future visceral pleura (3) covers the whole lobe.

​8.6  POJA-L411

Title: Pseudoglandular - canalicular period of developing lung (2)

​Description:
Stain Azan, human fetus. Part of a future lung lobe with cross-sectioned larger bronchi (1) in close association with smaller bronchial tubes (*). Note the branching of the bronchial tubes within an islet. The mesenchyme within the islets of future tubes becomes more condensed (↓). Blood vessels (2) as well as thin-walled lymph vessels (3) are recognizable. The future visceral pleura is indicated by (4) 

​8.6  POJA-L412

Title: Pseudoglandular - canalicular period of developing lung (3) 

Description: ​
Stain Azan, human fetus. Terminal budding and elongation of the future bronchial tree: branching of a bronchial tubes (1) within an islet where the mesenchyme condenses (4). A large blood vessel (2) and a lymph vessel (3) are recognizable. Note in the mesenchyme formation of blood capillaries in the vicinity of the bronchial tubes (↓).

​Keywords/Mesh:  respiratory tract, lung development, fetus,  visceral pleura, pseudoglandular period, canalicular period, bronchial tube, cartilage, blood vessel, lymph vessel, capillary, mesenchyme, histology, embryology, POJA collection