Template:Lung stage table: Difference between revisions
From Embryology
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|+ '''Human Lung Stages''' | |+ '''Human Lung Stages''' | ||
|-bgcolor="CEDFF2" | |-bgcolor="CEDFF2" | ||
! Stage | ! Lung Stage | ||
! Human | ! Human | ||
! Features | ! Features | ||
! Vascular | |||
|- | |- | ||
| width=120px|Embryonic | | width=120px|Embryonic | ||
| width= | | width=130px|week 4 to 5 | ||
| lung buds originate as an outgrowth from the ventral wall of the foregut where lobar division occurs | | lung buds originate as an outgrowth from the ventral wall of the foregut where lobar division occurs | ||
| extra pulmonary artery then lobular artery | |||
|- bgcolor="F5FAFF" | |- bgcolor="F5FAFF" | ||
| Pseudoglandular | | Pseudoglandular | ||
| week 5 to 17 | | week 5 to 17 | ||
| conducting epithelial tubes surrounded by thick mesenchyme are formed, extensive airway branching | | conducting epithelial tubes surrounded by thick mesenchyme are formed, extensive airway branching | ||
| Pre-acinar arteries | |||
|- | |- | ||
| Canalicular | | Canalicular | ||
| week 16 to 25 | | week 16 to 25 | ||
| bronchioles are produced, increasing number of capillaries in close contact with cuboidal epithelium and the beginning of alveolar epithelium development | | bronchioles are produced, increasing number of capillaries in close contact with cuboidal epithelium and the beginning of alveolar epithelium development | ||
| Intra-acinar arteries | |||
|- bgcolor="F5FAFF" | |- bgcolor="F5FAFF" | ||
| Saccular | | Saccular | ||
| week 24 to 40 | | week 24 to 40 | ||
| alveolar ducts and air sacs are developed | | alveolar ducts and air sacs are developed | ||
| alveolar duct arteries | |||
|- | |- | ||
| Alveolar | | Alveolar | ||
| late fetal to 8 years | | late fetal to 8 years | ||
| secondary septation occurs, marked increase of the number and size of capillaries and alveoli | | secondary septation occurs, marked increase of the number and size of capillaries and alveoli | ||
| alveolar capillaries | |||
|- bgcolor="F5FAFF" | |- bgcolor="F5FAFF" | ||
| | | colspan=5| {{Lung stages}} '''Links:''' [[Template:Lung stage table2|Species Stage Comparison]] | {{respiratory}} | ||
| | |}<noinclude>[[Category:Template]][[Category:Respiratory]][[Category:Table]][[Category:Timeline]]</noinclude> | ||
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|}<noinclude>[[Category:Template]][[Category:Respiratory]][[Category:Table]]</noinclude> | |||
Latest revision as of 12:06, 23 February 2019
| Lung Stage | Human | Features | Vascular | |
|---|---|---|---|---|
| Embryonic | week 4 to 5 | lung buds originate as an outgrowth from the ventral wall of the foregut where lobar division occurs | extra pulmonary artery then lobular artery | |
| Pseudoglandular | week 5 to 17 | conducting epithelial tubes surrounded by thick mesenchyme are formed, extensive airway branching | Pre-acinar arteries | |
| Canalicular | week 16 to 25 | bronchioles are produced, increasing number of capillaries in close contact with cuboidal epithelium and the beginning of alveolar epithelium development | Intra-acinar arteries | |
| Saccular | week 24 to 40 | alveolar ducts and air sacs are developed | alveolar duct arteries | |
| Alveolar | late fetal to 8 years | secondary septation occurs, marked increase of the number and size of capillaries and alveoli | alveolar capillaries | |
| embryonic stage - pseudoglandular stage - canalicular stage - saccular stage - alveolar stage Links: Species Stage Comparison | respiratory | ||||
