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Bronchioli/en: Unterschied zwischen den Versionen

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Kleinere Verzweigungen der Bronchien in den Lungen. Bis zum Durchmesser von 1 mm erfolgen weitere Teilungen und nur bis hierher enthält die Bronchialwand Knorpel, um das Offenbleiben der Bronchien und damit die Belüftung der gesamten Lunge zu gewährleisten. Mit fortschreitender Teilung nehmen [[Schleim|Becherzellen]] und Flimmerepithel ab und es bildet sich unter der [[Schleimhaut]] ein ringförmiges Muskelsystem. Dessen Kontraktion kann zu einem spastischen [[Asthma bronchiale]] führen. Die Bronchiolen teilen sich in jeweils 4–5 Endbronchiolen, Bronchioli terminales genannt, und diese wieder in Bronchioli respiratorii, die etwa 1–3,5 mm lang und 0,4 mm weit sind. Stellenweise wird deren Wand schon von Luftbläschen, [[Alveolen]] genannt, gebildet, die nur noch durch eine dünne zweischichtige Membran vom Lungenkreislauf des Blutes getrennt sind. Hier findet die Übergabe von [[Sauerstoff]] an die [[Erythrozyt|Erythrozyten]] und die Abgabe von [[Kohlenstoffdioxid]] an die Atemluft statt.<br/>
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Smaller branches of the bronchi in the lungs. Up to a diameter of 1 mm there are further divisions and only up to this point does the bronchial wall contain cartilage in order to ensure that the bronchial tubes remain open and that the entire lung is ventilated. With progressive division [[mucus|cup cells]] and ciliated epithelium decrease and a ring-shaped muscle system forms under the [[mucosa]]. Its contraction can lead to spastic [[asthma bronchiale]]. The bronchioles are divided into 4-5 end bronchioles each, called bronchioli terminales, and these again into bronchioli respiratorii, which are about 1-3.5 mm long and 0.4 mm wide. In places their walls are already formed by air bubbles, called [[alveoli]], which are only separated from the pulmonary circulation of the blood by a thin two-layer membrane. Here the transfer of [[oxygen]] to [[erythrocyte| erythrocytes]] and the release of [[carbon dioxide]] to the respiratory air takes place.<br/> <u>https://de.wikipedia.org/wiki/Bronchialsystem</u>
<u>https://de.wikipedia.org/wiki/Bronchialsystem</u>
 
  
 
[https://de.wikipedia.org/wiki/Wikipedia:Lizenzbestimmungen_Commons_Attribution-ShareAlike_3.0_Unported <sub>Wikipedia CC-by-sa-3.0</sub>]
 
[https://de.wikipedia.org/wiki/Wikipedia:Lizenzbestimmungen_Commons_Attribution-ShareAlike_3.0_Unported <sub>Wikipedia CC-by-sa-3.0</sub>]

Version vom 16. April 2019, 21:26 Uhr

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Smaller branches of the bronchi in the lungs. Up to a diameter of 1 mm there are further divisions and only up to this point does the bronchial wall contain cartilage in order to ensure that the bronchial tubes remain open and that the entire lung is ventilated. With progressive division cup cells and ciliated epithelium decrease and a ring-shaped muscle system forms under the mucosa. Its contraction can lead to spastic asthma bronchiale. The bronchioles are divided into 4-5 end bronchioles each, called bronchioli terminales, and these again into bronchioli respiratorii, which are about 1-3.5 mm long and 0.4 mm wide. In places their walls are already formed by air bubbles, called alveoli, which are only separated from the pulmonary circulation of the blood by a thin two-layer membrane. Here the transfer of oxygen to erythrocytes and the release of carbon dioxide to the respiratory air takes place.
https://de.wikipedia.org/wiki/Bronchialsystem

Wikipedia CC-by-sa-3.0