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− | {{review}} | + | {{OpenPagesTop}} |
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| ==Introduction== | | ==Introduction== |
| [[Image:Doglungdeflated.jpg|right|thumb|250px|©RVC 2008]] | | [[Image:Doglungdeflated.jpg|right|thumb|250px|©RVC 2008]] |
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| ===Alveoli=== | | ===Alveoli=== |
− | Alveoli are minute, polygonal chambers, whose diameter changes with the processes of [[Ventilation - Anatomy & Physiology#Inspiration|inspiration]] and [[Ventilation - Anatomy & Physiology#Expiration|expiration]], and varies by species. The wall of the alveoli is extremely thin, consisting of 2 irregular layers of epithelial sheets, 'sandwiching' a network of capillaries. Thus the ''Blood-Gas Barrier'' is just a single basal lamina - ideal for [[Gas Exchange - Anatomy & Physiology|gaseous exchange]]. The alveolar interstitium is formed from connective tissue fibres and cells, which include collagen fibrils and elastin fibres. | + | Alveoli are minute, polygonal chambers, whose diameter changes with the processes of [[Ventilation - Anatomy & Physiology#Inspiration|inspiration]] and [[Ventilation - Anatomy & Physiology#Expiration|expiration]], and varies by species. The wall of the alveoli is extremely thin, consisting of 2 irregular layers of epithelial sheets, 'sandwiching' a network of capillaries. Thus the ''Blood-Gas Barrier'' at the thinnest portions is a tripartite structure consisting of the pulmonary capillary endothelium, a common basal lamina and the alveolar epithelium- ideal for [[Gas Exchange - Anatomy & Physiology|gaseous exchange]]. The alveolar interstitium is formed from connective tissue fibres and cells, which include collagen fibrils and elastin fibres. |
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| ==Function== | | ==Function== |
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| ==Histology== | | ==Histology== |
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| + | '''Pneumocytes''' are a type of epithelial cells that lines the alveoli. |
| + | *the '''Type I''' pneumocytes are simple squamous with a flattened central nucleus that protrudes into the alveolar lume |
| + | *the '''Type II''' pneumocytes are round to pyramidal-shaped cells that are found among the type I pneumocytes. The type II pneumocytes have a larger centrally placed nucleus with a prominent nucleolus and a slightly vacuolated, foamy, basophilic cytoplasm. The nucleus of these cells also has a nucleolus. |
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| Click here for more information on [[:Category:Lungs - Pathology|pathology of the lungs]]. | | Click here for more information on [[:Category:Lungs - Pathology|pathology of the lungs]]. |
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| + | {{Template:Learning |
| + | |powerpoints = [[Respiratory System Histology resource|Respiratory system histology tutorial with questions and answers]] |
| + | |dragster = [[Respiratory System Histology Resource (II)|Lung Histology Dragster]] |
| + | |videos = [[Video: Piglet Anatomy|Piglet Anatomy]]<br>[[Video: African Gray Parrot Radiograph|African Gray Parrot Radiograph]]<br>[[Video: Equine left-sided abdominal and thoracic topography dissection|Equine left-sided abdominal and thoracic topography dissection]]<br>[[Video: Equine thoracic cavity dissection|Equine thoracic cavity dissection]]<br>[[Video: Ovine right-sided abdominal and thoracic dissection|Ovine right-sided abdominal and thoracic dissection]] |
| + | |OVAM = [http://www.um.es/anatvet/interactividad/ingles/avispi/practicas/practica1.htm Dissection plans of the canine thoracic cavity]<br>[http://www.onlineveterinaryanatomy.net/sites/default/files/original_media/document/asset_9296_Dried%20dog%20lung%20PDF.pdf Labelled dried dog lung]<br>[http://www.onlineveterinaryanatomy.net/content/respiration-histology-images-lung-0 Histology - Lung 1]<br>[http://www.onlineveterinaryanatomy.net/content/respiration-histology-images-lung Histology - Lung 2]<br>[http://www.onlineveterinaryanatomy.net/content/ovine-lung-histology-0 Histology - Ovine Lung 1]<br>[http://www.onlineveterinaryanatomy.net/content/ovine-lung-histology Histology - Ovine Lung 2]<br>[http://www.onlineveterinaryanatomy.net/content/fallow-deer-lungs-0 Cast of Fallow deer lungs]<br>[http://www.onlineveterinaryanatomy.net/content/interactive-pig-anatomy-lungs-0 Interactive Pig Anatomy - Lungs] |
| + | }} |
| + | ==Webinars== |
| + | <rss max="10" highlight="none">https://www.thewebinarvet.com/respiratory/webinars/feed</rss> |
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| ==References== | | ==References== |
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| {{citation|initiallast = Dyce|initialfirst = K.M|2last = Sack|2first = W.O|finallast = Wensing|finalfirst = C.J.G|year = 2002|title = Textbook of Veterinary Anatomy|ed =3rd|city = Philadelphia|pub = Saunders}} | | {{citation|initiallast = Dyce|initialfirst = K.M|2last = Sack|2first = W.O|finallast = Wensing|finalfirst = C.J.G|year = 2002|title = Textbook of Veterinary Anatomy|ed =3rd|city = Philadelphia|pub = Saunders}} |
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| + | {{review}} |
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| [[Category:Respiratory System - Anatomy & Physiology]] | | [[Category:Respiratory System - Anatomy & Physiology]] |
| [[Category:A&P Done]] | | [[Category:A&P Done]] |